Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Committed Loan Repurchase Facility Committed Loan Repurchase Facility [Member] Committed Loan Repurchase Facility [Member] Name of Property [Axis] Name of Property [Axis] Name of Property [Domain] Name of Property [Domain] Wayne, New Jersey Wayne, New Jersey [Member] Wayne, New Jersey [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Proceeds from lease Proceeds from Lease Payments Real estate and related lease intangibles, net Real Estate Investment Property, Net Less: Accumulated depreciation and amortization Real Estate Investment Property, Accumulated Depreciation Mortgage Loan Related to Property Sales Mortgage Loan Related to Property Sales Gain (loss) on extinguishment/defeasance of debt Gain (Loss) on Extinguishment of Debt Number of committed loan repurchase facilities executed Number of Committed Loan Repurchase Facilities Executed Number of Committed Loan Repurchase Facilities Executed Number of additional extension periods Number of Additional Extension Periods Number of Additional Extension Periods Line of credit facility, period of additional extensions of maturity Line of Credit Facility, Period of Additional Extensions of Maturity Line of Credit Facility, Period of Additional Extensions of Maturity Debt Disclosure [Abstract] Schedule of repurchase agreement Schedule of Repurchase Agreements [Table Text Block] Schedule of contractual payments under all borrowings by maturity Schedule of Maturities of Long-term Debt [Table Text Block] Noncontrolling Interest [Abstract] NONCONTROLLING INTERESTS Noncontrolling Interest Disclosure [Text Block] DEBT OBLIGATIONS, NET Debt Disclosure [Text Block] Earnings Per Share [Abstract] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class A Common Stock Common Class A [Member] Earnings Per Share Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Basic Net Income (Loss) Per Share of Class A Common Stock Earnings Per Share, Basic [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Net income (loss) attributable to Class A common shareholders Net Income (Loss) Available to Common Stockholders, Basic Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted average number of shares of Class A common stock outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Basic (in dollars per share) Earnings Per Share, Basic Diluted Net Income (Loss) Per Share of Class A Common Stock Earnings Per Share, Diluted [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Amounts attributable to operating partnership’s share of Ladder Capital Corp net income (loss) Adjustment for Noncontrolling Interest in Net Income (Loss) Operating Partnerships Nonredeemable Represents the adjustment for income (loss) attributable to the nonredeemable noncontrolling partner in an operating partnership due to its potentially dilutive effect. Additional corporate tax (expense) benefit Adjustment for Income Tax Expense (Benefit) Represents the adjustment for corporate income tax pertaining to the potentially dilutive effect of the income (loss) added back. Diluted Net income (loss) available for Class A common shareholders Net Income (Loss) Available to Common Stockholders, Diluted Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Shares issuable relating to converted Class B common shareholders (in shares) Incremental Common Shares Attributable to Conversion of Common Stock Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of conversion of common stock from one class to another class. Incremental shares of unvested Class A restricted stock (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Diluted weighted average number of shares of Class A common stock outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Diluted (in dollars per share) Earnings Per Share, Diluted SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Abstract] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Axis] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Axis] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Domain] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Domain] Mortgage loans held by consolidated subsidiaries Mortgage Loans Held By Consolidated Subsidiaries [Member] Mortgage Loans Held By Consolidated Subsidiaries [Member] First mortgage loans First Mortgage Held-for-Investment [Member] Loan secured by real property that has a first (highest) lien on such property in the event of default by the borrower and is held by the entity for investment. Mezzanine loans Mezzanine Loan [Member] A mortgage loan secured by the equity of a company owning real property. Mortgage loan receivables held for investment, net, at amortized cost Mortgage Loan Receivables Held-for-Investment [Member] Represents the mortgage loans receivable held for investment at amortized cost. First mortgage loans First Mortgage Held-for-sale [Member] Loan secured by real property that has a first (highest) lien on such property in the event of default by the borrower and is held for sale by the entity. Mortgage loan receivables held for sale Mortgage Loan Receivables Held-for-sale [Member] Represents the mortgage loans receivable held for sale. SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] Realized gain on sale of mortgage loan receivables SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Foreclosure Mortgage loans held by consolidated subsidiaries, beginning balance SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Origination of mortgage loan receivables SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, New Mortgage Loan Purchases of mortgage loan receivables Mortgage Loans on Real Estate, Purchases of Mortgage Loans Mortgage Loans on Real Estate, Purchases of Mortgage Loans Proceeds from sales of mortgage loan receivables(3) SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Collections of Principal Sale of loans, net Gain (Loss) on Sales of Loans, Net Transfer between held for investment and held for sale Transfer To (From) Loans Held-for-sale to Portfolio Loans Transfer To (From) Loans Held-for-sale to Portfolio Loans Accretion/amortization of discount, premium and other fees Mortgage Loans on Real Estate Accretion Amortization of Discounts Premiums and Other Fees on Mortgage Loans Represents the amount of accretion/ amortization of discount, premium and other fees on mortgage loans on real estate accreted/ amortized during the reporting period. Provision for loan and lease losses Provision for Loan and Lease Losses Mortgage loans held by consolidated subsidiaries, ending balance Outstanding Face Amount Mortgage Loans On Real Estate Face Amount Of Mortgages Balance Sheet Date Amount of the contractual principal due as of the balance sheet date of the mortgage loan (face amount). Provision for loan losses Loans and Leases Receivable, Allowance Carrying value Loans Receivable, Gross, Commercial, Real Estate Provision for loan losses Allowance for Loan and Lease Losses, Real Estate Carrying Value Mortgage Loans on Real Estate, Commercial and Consumer, Net Loans held for sale transferred to loans held for investments, fair value Loans Held-for-sale Transferred to Portfolio Loans, Fair Value Loans Held-for-sale Transferred to Portfolio Loans, Fair Value Loans from held for sale transferred to portfolio loans, remaining maturity Loans From Held For Sale Transferred To Portfolio Loans, Remaining Maturity Loans From Held For Sale Transferred To Portfolio Loans, Remaining Maturity Investments, Debt and Equity Securities [Abstract] REAL ESTATE SECURITIES Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Unrealized gain (loss) on equity securities Equity Securities, FV-NI, Realized Gain (Loss) Other than temporary impairment losses included in consolidated statements of income Other-than-temporary Impairment Loss, Debt Securities, Portion Recognized in Earnings Segment Reporting [Abstract] SEGMENT REPORTING Segment Reporting Disclosure [Text Block] Income Tax Disclosure [Abstract] Income Tax Expense (Benefit), Continuing Operations [Abstract] Income Tax Expense (Benefit), Continuing Operations [Abstract] Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Current Income Tax Expense (Benefit), Continuing Operations [Abstract] U.S. Federal Current Federal Tax Expense (Benefit) State and local Current State and Local Tax Expense (Benefit) Total current expense (benefit) Current Income Tax Expense (Benefit) Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] U.S. Federal Deferred Federal Income Tax Expense (Benefit) State and local Deferred State and Local Income Tax Expense (Benefit) Total deferred expense (benefit) Deferred Income Tax Expense (Benefit) Provision for income tax expense (benefit) Income Tax Expense (Benefit) Equity [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Tax Period [Axis] Tax Period [Axis] Tax Period [Domain] Tax Period [Domain] Tax Year 2018 Tax Year 2018 [Member] Tax Year 2017 Tax Year 2017 [Member] Tax Year 2016 Tax Year 2016 [Member] Class A common stock, par value $0.001 per share, 600,000,000 shares authorized; 106,642,335 and 96,258,847 shares issued and 103,941,173 and 93,641,260 shares outstanding Class B Common Stock Common Class B [Member] Series REIT LP Units Series REIT LP Units [Member] Series REIT LP Units [Member] Class of Stock [Line Items] Class of Stock [Line Items] Common Stock, Dividends, Per Share, Cash Paid Common Stock, Dividends, Per Share, Cash Paid Dividends per share of Class A common stock (in dollars per share) Common Stock, Dividends, Per Share, Declared Ordinary Dividends, Per Share, Common Stock Ordinary Dividends, Per Share, Common Stock Ordinary Dividends, Per Share, Common Stock Ordinary Dividends Treated as Qualified Dividends, Per Share, Common Stock Ordinary Dividends Treated as Qualified Dividends, Per Share, Common Stock Ordinary Dividends Treated as Qualified Dividends, Per Share, Common Stock Ordinary Dividends Treated as Capital Gain Per Share Common Stock Ordinary Dividends Treated as Capital Gain Per Share Common Stock Ordinary Dividends Treated as Capital Gain Per Share Common Stock Ordinary Dividends Treated as Capital Gain Unrecaptured 1250Gain Per Share Common Stock Ordinary Dividends Treated as Capital Gain Unrecaptured 1250Gain Per Share Common Stock Ordinary Dividends Treated as Capital Gain Unrecaptured 1250Gain Per Share Common Stock Equity Method Investments and Joint Ventures [Abstract] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Grace Lake JV, LLC Grace Lake JV, LLC [Member] Represents information pertaining to Grace Lake JV, LLC. 24 Second Avenue Holdings LLC 24 Second Avenue Holdings LLC [Member] 24 Second Avenue Holdings LLC [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Investment in unconsolidated joint ventures Equity Method Investments SUBSEQUENT EVENTS Subsequent Events [Text Block] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] 2014 Share Repurchase Authorization Program 2014 Share Repurchase Authorization Program [Member] 2014 Share Repurchase Authorization Program Purchase of treasury stock (in shares) Treasury Stock, Shares, Acquired Treasury Stock [Roll Forward] Treasury Stock [Roll Forward] Treasury Stock [Roll Forward] Remaining amount available for repurchase Stock Repurchase Program, Remaining Authorized Repurchase Amount Additional authorizations Stock Repurchase Program, Authorized Amount Repurchases paid Treasury Stock, Value, Acquired, Cost Method Repurchases unsettled Treasury Stock, Value, Not Settled, Cost Method Treasury Stock, Value, Not Settled, Cost Method Remaining amount available for repurchase Real Estate [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Above Market Leases Above Market Leases [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Gross intangible assets Finite-Lived Intangible Assets, Gross Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Net intangible assets Finite-Lived Intangible Assets, Net Unamortized favorable/unfavorable lease intangibles Favorable (Unfavorable) Lease Intangibles Represents the amount of favorable or unfavorable lease intangibles as of the balance sheet date. Decrease in operating lease income, amortization of above market lease intangibles acquired Amortization of Intangible Assets Increase in operating lease income, amortization of below market lease intangibles acquired Amortization of Below Market Lease Unbilled rent receivables Unbilled Rent Receivables Represents the amount of unbilled rent receivables. Unencumbered real estates Real Estates, Unencumbered Real Estates, Unencumbered Weighted average amortization period for intangible assets acquired Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Revenues from acquisitions Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Net earnings (loss) Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Income Tax Contingency [Table] Income Tax Contingency [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] US statutory tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent REIT income not subject to corporate income tax Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Increase due to state and local taxes Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Impact of Tax Cuts and Jobs Act Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act Of 2017, Percent Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act Of 2017, Percent Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Effective Income Tax Rate Reconciliation, Tax Settlement, State and Local, Amount Effective Income Tax Rate Reconciliation, Tax Settlement, State and Local, Amount Fees And Other Income Fees And Other Income Fees and Other Income Carrying Value Mortgage Loans on Real Estate, Gross, Commercial and Consumer, Net Mortgage Loans on Real Estate, Gross, Commercial and Consumer, Net Carrying Value Weighted Average Yield SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate Remaining Maturity (years) Mortgage Loans on Real Estate Remaining Maturity Represents the remaining maturity period of mortgage loans. Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Securities Financing Transaction [Axis] Securities Financing Transaction [Axis] Securities Financing Transaction [Domain] Securities Financing Transaction [Domain] Senior Unsecured Notes Senior Unsecured Notes [Member] Senior Unsecured Notes CLO debt Collateralized Debt Obligations [Member] Mortgage Loan Financing Mortgage Loan Receivable Financing [Member] Mortgage Loan Receivable Financing Debt Instrument [Line Items] Debt Instrument [Line Items] Long-term Debt, Fiscal Year Maturity [Abstract] Long-term Debt, Fiscal Year Maturity [Abstract] 2018 (Last 3 months) Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2019 Long-term Debt, Maturities, Repayments of Principal in Year Two 2020 Long-term Debt, Maturities, Repayments of Principal in Year Three 2021 Long-term Debt, Maturities, Repayments of Principal in Year Four 2022 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Subtotal Debt and Capital Lease Obligations Debt issuance costs Debt Issuance Costs, Net Premiums included in mortgage loan financing Debt Instrument, Unamortized Premium Debt obligations Debt Obligations Debt Obligations Length of extension options Debt Instrument Length of Period of Extension Options Represents the length of period of the extension options. SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, by Property [Table] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, by Property [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Pelican Rapids, MN Pelican Rapids, MN [Member] Pelican Rapids, MN [Member] Carthage, MO Carthage, MO [Member] Carthage, MO [Member] Bolivar, MO Bolivar, MO [Member] Bolivar, MO [Member] Pinconning, MI Pinconning, MI [Member] Pinconning, MI [Member] New Hampton, IA New Hampton, IA [Member] New Hampton, IA [Member] Ogden, IA Ogden, IA [Member] Ogden, IA [Member] Wonder Lake, IL Wonder Lake, IL [Member] Wonder Lake, IL [Member] Moscow Mills, MO Moscow Mills, MO [Member] Moscow Mills, MO [Member] Foley, MN Foley, MN [Member] Foley, MN [Member] Kirbyville, MO Kirbyville, MO [Member] Kirbyville, MO [Member] Gladwin, MI Gladwin, MI [Member] Gladwin, MI [Member] Rockford, MN Rockford, Minnesota [Member] Rockford, Minnesota [Member] Winterset, IA Winterset, Iowa [Member] Winterset, Iowa [Member] Kawkawlin, MI Kawkawlin, Michigan [Member] Kawkawlin, Michigan [Member] Aroma Park, IL Aroma Park, Illinois [Member] Aroma Park, Illinois [Member] East Peoria, IL East Peoria, Illinois [Member] East Peoria, Illinois [Member] Milford, IA Milford, Iowa [Member] Milford, Iowa [Member] Jefferson City, MO Jefferson City, Missouri [Member] Jefferson City, Missouri [Member] Denver, IA Denver, Iowa [Member] Denver, Iowa [Member] Port O'Connor, TX Port O'Connor, Texas [Member] Port O'Connor, Texas [Member] Wabasha, MN Wabasha, Minnesota [Member] Wabasha, Minnesota [Member] Jacksonville, FL Jacksonville, Florida [Member] Jacksonville, Florida [Member] Shelbyville, IL Shelbyville, Illinois [Member] Shelbyville, Illinois [Member] Jessup, IA Jesup, Iowa [Member] Jesup, Iowa [Member] Hanna City, IL Hanna City, Illinois [Member] Hanna City, Illinois [Member] Ridgedale, MO Ridgedale, Missouri [Member] Ridgedale, Missouri [Member] Peoria, IL Peoria, Illinois [Member] Peoria, Illinois [Member] Carmi, IL Carmi, Illinois [Member] Carmi, Illinois Springfield, IL Springfield, Illinois [Member] Springfield, Illinois Fayetteville, NC Fayetteville, North Carolina [Member] Fayetteville, North Carolina Retail Property in Dryden Township, MI Dryden, Michigan [Member] Dryden, Michigan Lamar, MO Lamar, Missouri [Member] Lamar, Missouri Union, MO Union, Missouri [Member] Union, Missouri Pawnee, IL Pawnee, Illinois [Member] Pawnee, Illinois Linn, MO Linn, Missouri [Member] Linn, Missouri Cape Girardeau, MO Cape Girardeau, Missouri [Member] Cape Girardeau, Missouri Retail Property in Decatur-Pershing, IL Decatur, Illinois One [Member] Decatur, Illinois One Rantoul, IL Rantoul, Illinois [Member] Rantoul, Illinois Flora Vista, NM Flora Vista, New Mexico [Member] Flora Vista, New Mexico Mountain Grove, MO Mountain Grove, Missouri [Member] Mountain Grove, Missouri Retail Property in Decatur-Sunnyside, IL Decatur, Illinois Two [Member] Decatur, Illinois Two Champaign, IL Champaign, Illinois [Member] Champaign, Illinois Retail Property in San Antonio, TX San Antonio, Texas [Member] San Antonio, Texas Retail Property in Borger, TX Borger, Texas [Member] Borger, Texas Retail Property in Dimmitt, TX Dimmitt, Texas [Member] Dimmitt, Texas St. Charles, Minnesota St. Charles, Minnesota [Member] St. Charles, Minnesota Philo, Illinois Philo, Illinois [Member] Philo, Illinois Radford, Virginia Radford, Virginia [Member] Radford, Virginia [Member] Rural Retreat, Virginia Rural Retreat, Virginia [Member] Rural Retreat, Virginia [Member] Albion, Pennsylvania Albion, Pennsylvania [Member] Albion, Pennsylvania [Member] Mount Vernon, Alabama Mount Vernon, Alabama [Member] Mount Vernon, Alabama [Member] Malone, New York Malone, New York [Member] Malone, New York [Member] Mercedes, Texas Mercedes, Texas [Member] Mercedes, Texas [Member] Gordonville, Missouri Gordonville, Missouri [Member] Gordonville, Missouri [Member] Rice, Minnesota Rice, Minnesota [Member] Rice, Minnesota [Member] Bixby, Oklahoma Bixby, Oklahoma [Member] Bixby, Oklahoma [Member] Farmington, Illinois Farmington, Illinois [Member] Farmington, Illinois [Member] Grove, Oklahoma Grove, Oklahoma [Member] Grove, Oklahoma [Member] Jenks, Oklahoma Jenks, Oklahoma [Member] Jenks, Oklahoma [Member] Bloomington, Illinois Bloomington, Illinois [Member] Bloomington, Illinois [Member] Montrose, Minnesota Montrose, Minnesota [Member] Montrose, Minnesota [Member] Lincoln County, Missouri Lincoln County, Missouri [Member] Lincoln County, Missouri [Member] Wilmington, Illinois Wilmington, Illinois [Member] Wilmington, Illinois [Member] Danville, Illinois Danville, Illinois [Member] Danville, Illinois [Member] Moultrie, Georgia Moultrie, Georgia [Member] Moultrie, Georgia [Member] Rose Hill, North Carolina Rose Hill, North Carolina [Member] Rose Hill, North Carolina [Member] Rockingham, North Carolina Rockingham, North Carolina [Member] Rockingham, North Carolina [Member] Biscoe, North Carolina Biscoe, North Carolina [Member] Biscoe, North Carolina [Member] DeSotaIowaMember DeSotaIowaMember [Member] DeSotaIowaMember [Member] Kerrville, Texas Kerrville, Texas [Member] Kerrville, Texas [Member] Floresville, Texas Floresville, Texas [Member] Floresville, Texas [Member] Minot, North Dakota Minot, North Dakota [Member] Minot, North Dakota [Member] Lebanon, Michigan Lebanon, Michigan [Member] Lebanon, Michigan [Member] Effingham County, Illinois Effingham County, Illinois [Member] Effingham County, Illinois [Member] Ponce, Puerto Rico Ponce, Puerto Rico [Member] Ponce, Puerto Rico [Member] Tremont, Illinois Tremont, Illinois [Member] Tremont, Illinois [Member] Pleasanton, Texas Pleasanton, Texas [Member] Pleasanton, Texas [Member] Peoria, Illinois, 2 Peoria, Illinois, 2 [Member] Peoria, Illinois, 2 [Member] Bridgeport, Illinois Bridgeport, Illinois [Member] Bridgeport, Illinois [Member] Warren, Minnesota Warren, Minnesota [Member] Warren, Minnesota [Member] Canyon Lake, Texas Canyon Lake, Texas [Member] Canyon Lake, Texas [Member] Wheeler, Texas Wheeler, Texas [Member] Wheeler, Texas [Member] Aurora, Minnesota Aurora, Minnesota [Member] Aurora, Minnesota [Member] Red Oak, Iowa Red Oak, Iowa [Member] Red Oak, Iowa [Member] Zapata, Texas Zapata, Texas [Member] Zapata, Texas [Member] St. Francis, Minnesota St. Francis, Minnesota [Member] St. Francis, Minnesota [Member] Yorktown, Texas Yorktown, Texas [Member] Yorktown, Texas [Member] Battle Lake, Minnesota Battle Lake, Minnesota [Member] Battle Lake, Minnesota [Member] Paynesville, Minnesota Paynesville, Minnesota [Member] Paynesville, Minnesota [Member] Wheaton, Missouri Wheaton, Missouri [Member] Wheaton, Missouri [Member] Rotterdam, New York Rotterdam, New York [Member] Rotterdam, New York [Member] Hilliard, Ohio Hilliard, Ohio [Member] Hilliard, Ohio [Member] Niles, Ohio Niles, Ohio [Member] Niles, Ohio [Member] Youngstown, Ohio Youngstown, Ohio [Member] Youngstown, Ohio [Member] Kings Mountain, North Carolina Kings Mountain, North Carolina [Member] Kings Mountain, North Carolina [Member] Iberia, Missouri Iberia, Missouri [Member] Iberia, Missouri [Member] Pine Island, Minnesota Pine Island, Minnesota [Member] Pine Island, Minnesota [Member] Isle, Minnesota Isle, Minnesota [Member] Isle, Minnesota [Member] Jacksonville, North Carolina Jacksonville, North Carolina [Member] Jacksonville, North Carolina [Member] Evansville, Indiana Evansville, Indiana [Member] Evansville, Indiana [Member] Woodland Park, Colorado Woodland Park, Colorado [Member] Woodland Park, Colorado [Member] Bellport, New York Bellport, New York [Member] Bellport, New York [Member] Ankeny, Iowa Ankeny, Iowa [Member] Ankeny, Iowa [Member] Springfield, Missouri Springfield, Missouri [Member] Springfield, Missouri [Member] Cedar Rapids, Iowa Cedar Rapids, Iowa [Member] Cedar Rapids, Iowa [Member] Fairfield, Iowa Fairfield, Iowa [Member] Fairfield, Iowa [Member] Owatonna, Minnesota Owatonna, Minnesota [Member] Owatonna, Minnesota [Member] Muscatine, Iowa Muscatine, Iowa [Member] Muscatine, Iowa [Member] Sheldon, Iowa Sheldon, Iowa [Member] Sheldon, Iowa [Member] Memphis, Tennessee Memphis, Tennessee [Member] Memphis, Tennessee [Member] Bennett, Colorado Bennett, Colorado [Member] Bennett, Colorado [Member] Conyers, Georgia Conyers, Georgia [Member] Conyers, Georgia [Member] O'Fallon, Illinois O'Fallon, Illinois [Member] O'Fallon, Illinois [Member] El Centro, California El Centro, California [Member] El Centro, California [Member] Durant, Oklahoma Durant, Oklahoma [Member] Durant, Oklahoma [Member] Gallatin, Tennessee Gallatin, Tennessee [Member] Gallatin, Tennessee [Member] Mt. Airy, North Carolina Mt. Airy, North Carolina [Member] Mt. Airy, North Carolina [Member] Aiken, South Carolina Aiken, South Carolina [Member] Aiken, South Carolina [Member] Johnson City, Tennessee Johnson City, Tennessee [Member] Johnson City, Tennessee [Member] Palmview, Texas Palmview, Texas [Member] Palmview, Texas [Member] Ooltewah, Tennessee Ooltewah, Tennessee [Member] Ooltewah, Tennessee [Member] Abingdon, Virginia Abingdon, Virginia [Member] Abingdon, Virginia [Member] Wichita, Kansas Wichita, Kansas [Member] Wichita, Kansas [Member] North Dartsmouth, Massachusetts North Dartsmouth, Massachusetts [Member] North Dartsmouth, Massachusetts [Member] Vineland, New Jersey Vineland, New Jersey [Member] Vineland, New Jersey [Member] Saratoga Springs, New York Saratoga Springs, New York [Member] Saratoga Springs, New York [Member] Waldorf, Maryland Waldorf, Maryland [Member] Waldorf, Maryland [Member] Mooresville, North Carolina Mooresville, North Carolina [Member] Mooresville, North Carolina [Member] Sennett, New York Sennett, New York [Member] Sennett, New York [Member] DeLeon Springs, Florida DeLeon Springs, Florida [Member] DeLeon Springs, Florida [Member] Orange City, Florida Orange City, Florida [Member] Orange City, Florida [Member] Satsuma, Florida Satsuma, Florida [Member] Satsuma, Florida [Member] Greenwood, Arkansas Greenwood, Arkansas [Member] Greenwood, Arkansas [Member] Snellville, Georgia Snellville, Georgia [Member] Snellville, Georgia [Member] Columbia, South Carolina Columbia, South Carolina [Member] Columbia, South Carolina [Member] Millbrook, Alabama Millbrook, Alabama [Member] Millbrook, Alabama [Member] Pittsfield, Massachusetts Pittsfield, Massachusetts [Member] Pittsfield, Massachusetts [Member] Spartanburg, South Carolina Spartanburg, South Carolina [Member] Spartanburg, South Carolina [Member] Tupelo, Mississippi Tupelo, Mississippi [Member] Tupelo, Mississippi [Member] Lilburn, Georgia Lilburn, Georgia [Member] Lilburn, Georgia [Member] Douglasville, Georgia Douglasville, Georgia [Member] Douglasville, Georgia [Member] Elkton, Maryland Elkton, Maryland [Member] Elkton, Maryland [Member] Lexington, South Carolina Lexington, South Carolina [Member] Lexington, South Carolina [Member] Isla Vista, California Isla Vista, California [Member] Isla Vista, California [Member] Lithia Springs, Georgia Lithia Springs, Georgia [Member] Lithia Springs, Georgia [Member] Crum Lynne, PA Crum Laynne, Pennsylvania [Member] Crum Laynne, Pennsylvania [Member] Miami, Florida, 2 Miami, Florida, 2 [Member] Miami, Florida, 2 [Member] Office in Peoria IL Peoria, IL 3 [Member] Peoria, IL 3 [Member] Carmel, New York Carmel, New York [Member] Carmel, New York [Member] Wayne, New Jersey 2 WayneNewJerseyMemberTwo [Member] WayneNewJerseyMemberTwo [Member] Grand Rapids, Michigan, Two Grand Rapids, Michigan, Two [Member] Grand Rapids, Michigan, Two Grand Rapids, Michigan, One Grand Rapids, Michigan, One [Member] Grand Rapids, Michigan, One Richmond, VA Richmond, Virginia [Member] Richmond, Virginia [Member] Richmond, Virginia 2 Richmond, Virginia 2 [Member] Richmond, Virginia 2 [Member] Oakland County, Michigan Oakland County, Michigan [Member] Oakland County, Michigan [Member] Miami, FL Miami, Florida [Member] Miami, Florida [Member] Las Vegas, Nevada Las Vegas, Nevada [Member] Las Vegas, Nevada [Member] Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Real Estate [Domain] Real Estate [Domain] Retail Site Retail Site [Member] Office building Office Building [Member] Shopping Center Shopping Center [Member] Shopping Center [Member] Warehouse Warehouse [Member] Multi-family Multifamily [Member] Other Other Property [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] Encumbrances SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Amount of Encumbrances Initial Cost to Company SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract] Land SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land Building SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements Intangibles SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Intangibles SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Intangibles Costs Capitalized Subsequent to Acquisition SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Cost Capitalized Subsequent to Acquisition, Improvements Land SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Land, Amount Building SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Building and Improvements, Amount Intangibles SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Intangibles SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Intangibles Total SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross Accumulated Depreciation and Amortization SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation Life on which Depreciation in Latest Statement of Income is Computed SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Life Used for Depreciation Tax Basis SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Federal Income Tax Basis Offsetting [Abstract] Offsetting of derivative assets Offsetting Derivative Assets [Abstract] Gross amounts of recognized assets Derivative Asset, Fair Value, Gross Asset Gross amounts offset in the balance sheet Derivative Asset, Fair Value, Gross Liability Net amounts of assets presented in the balance sheet Derivative Asset Gross amounts not offset in the balance sheet Derivative Asset, Fair Value, Amount Not Offset Against Collateral [Abstract] Financial instruments Derivative Collateral Obligation to Return Financial Instruments Amount of obligation to return financial instruments collateral under master netting arrangements that have not been offset against derivative assets. Cash collateral received/(posted) Derivative, Collateral, Obligation to Return Cash Net amount Derivative Asset, Fair Value, Amount Offset Against Collateral Fair Value Disclosures [Abstract] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Beginning balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Transfer from level 2 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Paydowns/maturities Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Amortization of premium/discount Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Amortization of Premium or Discount Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Amortization of Premium or Discount Unrealized gain/(loss) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Realized gain/(loss) on sale Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Ending balance Income Statement [Abstract] Statement [Table] Statement [Table] Statement Statement [Line Items] Net interest income Interest Income (Expense), Net [Abstract] Interest income Interest and Dividend Income, Operating Interest expense Interest Expense Net interest income Interest Income (Expense), Net Provision for loan losses Provision for Loan Losses Expensed Net interest income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss Other income Noninterest Income [Abstract] Operating lease income Operating Leases, Income Statement, Lease Revenue Tenant recoveries Tenant Recoveries Tenant Recoveries Sale of loans, net Realized gain (loss) on securities Debt and Equity Securities, Realized Gain (Loss) Unrealized gain (loss) on equity securities Equity Securities, FV-NI, Unrealized Gain (Loss) Unrealized gain (loss) on Agency interest-only securities Debt and Equity Securities, Unrealized Gain (Loss) Realized gain on sale of real estate, net Gain (Loss) on Sale of Properties Fee and other income Interest and Fee Income, Loans and Leases Net result from derivative transactions Gain (Loss) on Derivative Instruments, Net, Pretax Earnings (loss) from investment in unconsolidated joint ventures Income (Loss) from Equity Method Investments Total other income Nonoperating Income (Expense) Costs and expenses Costs and Expenses [Abstract] Salaries and employee benefits Labor and Related Expense Operating expenses Operating Expenses Real estate operating expenses Real Estate Operating Expenses Represents the amount of operating expenses related to real estate investments incurred during the period. Fee expense Fee Expenses Represents the amount of expense in the period for fees paid related to purchases of real estate and referral fees for origination of loans. Depreciation and amortization Depreciation, Depletion and Amortization Total costs and expenses Costs and Expenses Income (loss) before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense (benefit) Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net (income) loss attributable to noncontrolling interest in consolidated joint ventures Noncontrolling Interest in Net Income (Loss) Joint Venture Partners, Nonredeemable Net (income) loss attributable to noncontrolling interest in operating partnership Noncontrolling Interest in Net Income (Loss) Operating Partnerships, Nonredeemable Net income (loss) attributable to Class A common shareholders Earnings per share: Weighted average shares outstanding: Basic (in shares) Diluted (in shares) Summary of fair value Fair Value, by Balance Sheet Grouping [Table Text Block] Summary of financial assets and liabilities, both reported at fair value on a recurring basis or amortized cost/par Schedule of Fair Value Assets and Liabilities Measured on Recurring or Amortized Cost Basis [Table Text Block] Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis or on an amortized cost basis.. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Schedule of changes in Level 3 of financial instruments Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of quantitative information Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Schedule of Real Estate Properties [Table] Schedule of Real Estate Properties [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land Land [Member] Building Building [Member] In-place leases and other intangibles In Place Leases and other Intangibles [Member] Represents information pertaining to in-place leases and other intangibles. Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Real estate and related lease intangibles, net Real Estate Investment Property, Net [Abstract] Real estate Real Estate Investment Property, at Cost Less: Accumulated depreciation and amortization Real estate and related lease intangibles, net Below market lease intangibles, net (other liabilities) Below Market Lease, Net Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Information Quarterly Financial Information [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock based compensation plans summary Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] Summary of the grants Schedule of Share Based Compensation Arrangement by Share Based Payment Award Other than Options Grants in Period and Amortization to Compensation Expense [Table Text Block] Tabular disclosure of grants during the period and amortization to compensation expense for the grants for non-vested equity-based payment instruments, excluding stock (or unit) options that validly exist and are outstanding as of the balance sheet date. Schedule of nonvested shares activity Schedule of Nonvested Share Activity [Table Text Block] Schedule of the Company's net income and weighted average shares outstanding Schedule of Net Income and Weighted Average Shares Outstanding [Table Text Block] Tabular disclosure of information pertaining to net income and weighted average shares outstanding. Schedule of calculation of basic and diluted net income per share amounts Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Ownership [Axis] Ownership [Axis] Ownership [Domain] Ownership [Domain] LCFH Ladder Capital Finance Holdings LLLP [Member] Represents information concerning Ladder Capital Finance Holdings LLLP. Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] B Participation Interest B Participation Interest [Member] B Participation Interest Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Affiliated Entity Affiliated Entity [Member] LCFC Ladder Capital Financial Corporation [Member] Ladder Capital Financial Corporation Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Mortgage loan financing Mortgages [Member] Borrowings from the Federal Home Loan Bank Federal Home Loan Bank Advances [Member] Senior Unsecured Notes Unsecured Debt [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Credit Agreement and Revolving Credit Facility Credit Agreement and Revolving Credit Facility [Member] Credit Agreement and Revolving Credit Facility [Member] Senior Notes Due, 2017 Senior Notes Due, 2017 [Member] Represents information pertaining to the senior notes due October 1, 2017. Securities or Other Assets Sold under Agreements to Repurchase, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] 2/29/2020 Maturing on 29 February 2020 [Member] Maturing on 29 February 2020 4/10/2018 Maturing 10 April 2018 [Member] Maturing 10 April 2018 [Member] 2/28/2022 Maturing on February 2022 [Member] Maturing on February 2022 10/1/2020 Maturing On 1 October 2020 [Member] Maturing On 1 October 2020 [Member] Various Date Maturing on Various Date [Member] Represents the group of securities or other assets sold under repurchase agreements which mature on various date. 4/7/2019 Maturing 7 April 2019 [Member] Maturing 7 April 2019 [Member] 5/6/2021 Maturing on 6 May 2021 [Member] Maturing on 6 May 2021 [Member] Committed Loan Repurchase Facility Committed Master Repurchase Agreements [Member] Represents information pertaining to committed master repurchase agreements. Term master repurchase agreement Term Master Repurchase Agreement [Member] Represents information pertaining to term master repurchase agreement. Revolving credit facility Revolving Credit Facility [Member] Total Repurchase Facilities Repurchase Agreements [Member] Uncommitted securities Repurchase Facilities Uncommitted Securities Repurchase Facilities [Member] Represents information pertaining to uncommitted securities repurchase facilities. CLO Debt Collateralized Loan Obligations [Member] Participation Financing - Mortgage Loan Receivable Participation Financing, Mortgage Loan Receivable [Member] Participation Financing, Mortgage Loan Receivable [Member] Letters of credit Letter of Credit [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Tuebor Tuebor Captive Insurance Company LLC [Member] Represents the information pertaining to Tuebor Captive Insurance Company LLC. Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] CMBS and U.S. Agency Securities Commercial Mortgage Backed Securities and US Agency Securities [Member] Represents information pertaining to CMBS and U.S. Agency Securities. First mortgage commercial real estate loans First Mortgage [Member] Weighted Average Weighted Average [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] One-Month LIBOR London Interbank Offered Rate (LIBOR) [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Bank Bank [Member] Bank Deutshe Bank, J.P. Morgan and Wells Fargo Deutshe Bank, J.P. Morgan and Wells Fargo [Member] Deutshe Bank, J.P. Morgan and Wells Fargo Related Reserve IV LLC Related Reserve IV LLC [Member] Related Reserve IV LLC Committed Loan and Securities Repurchase Facilities Securities Sold under Agreements to Repurchase [Abstract] Number of agreements Debt Instrument Number of Agreements Represents number of agreements executed during the period. Committed amount on credit agreement Line of Credit Facility, Maximum Borrowing Capacity Committed financing Securities Sold under Agreements to Repurchase Committed Amount Represents the committed amount as of the balance sheet date of securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo. Debt borrowings term Debt Instrument, Term Number of additional extension maturity periods Line of Credit Facility, Number of Additional Extensions of Maturity Period Line of Credit Facility, Number of Additional Extensions of Maturity Period Number of extension options Debt Instrument, Number Of Extension Options Debt Instrument, Number of Extension Options Length of additional extension maturity periods Debt Instrument Length of Additional Period of Extension Options Debt Instrument Length of Additional Period of Extension Options Repurchase agreements, number of counterparties Repurchase Agreements, Number of Counterparties Repurchase Agreements, Number of Counterparties Gross amounts of recognized liabilities Securities Sold under Agreements to Repurchase, Gross Excess collateral over amounts borrowed under repurchase agreements Repurchase Agreement Counterparty, Amount at Risk Ratio indebtedness over total equity (as a percent) Concentration Risk, Percentage Haircut on repurchase agreements (as a percent) Repurchase Agreements, Collateral Value in Excess of Loan Amount, Percent Repurchase Agreements, Collateral Value in Excess of Loan Amount, Percent Borrowing Under Credit Facilties and Debt Issuance Costs [Abstract] Borrowing Under Credit Facilties and Debt Issuance Costs [Abstract] Borrowing Under Credit Facilties and Debt Issuance Costs [Abstract] Number of extension maturity periods Line of Credit Facility, Number of Extensions of Maturity Period Represents the number of twelve-month extension maturity periods, subject to the satisfaction of customary conditions under the new revolving credit facility. Basis spread on variable rate (as a percent) Debt Instrument, Basis Spread on Variable Rate Unamortized debt issuance costs Unamortized Debt Issuance Expense Advance rates (as a percent) Debt Instrument Advance Rates as A Percentage of Collateral Represents the advance rates as a percentage of collateral. Mortgage loan receivables held for investment, net, at amortized cost: Mortgage loan financing Secured Debt Net unamortized premiums Debt Instrument, Unamortized Discount (Premium), Net Amortization of premiums Amortization of Debt Discount (Premium) Pledged assets, real estate and lease intangibles, net Pledged Assets, Not Separately Reported, Real Estate and Lease Intangibles, Net Pledged Assets, Not Separately Reported, Real Estate and Lease Intangibles, Net Collateralized Debt Obligations [Abstract] Collateralized Debt Obligations [Abstract] Collateralized Debt Obligations [Abstract] Unamortized debt issuance costs Interest rate Assets Sold under Agreements to Repurchase, Interest Rate Gross amounts offset in the balance sheet Securities Sold under Agreements to Repurchase, Asset Ownership percentage Ownership Percentage Ownership Percentage Proceeds from borrowings under debt obligations Proceeds from Borrowing Under Debt Obligations Proceeds from Borrowing Under Debt Obligations Interest expense, debt Interest Expense, Debt Debt Instrument, Face Amount Debt Instrument, Face Amount Borrowings from Federal Home Loan Bank (FHLB) [Abstract] Federal Home Loan Banks [Abstract] Maximum advance limit Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available Advance rates of total assets (as a percent) Debt Instrument Advance Rates as a Percentage of Total Assets Represents the advance rates as a percentage of total assets. Advance rates of total equity (as a percent) Debt Instrument Advance Rates as a Percentage of Total Equity Debt Instrument Advance Rates as a Percentage of Total Equity FHLB borrowings outstanding Long-term Federal Home Loan Bank Advances Additional committed term financing available from FHLB Federal Home Loan Bank Advances Additional Committed Available Amount Represents the amount of additional committed term financing available from Federal Home Loan Bank. Weighted average term Debt Instrument, Weighted Average Term Debt Instrument, Weighted Average Term Stated interest rate on debt instrument (as a percent) Debt Instrument, Interest Rate, Stated Percentage Weighted average interest rate Debt, Weighted Average Interest Rate Collateral for debt instrument Debt Instrument, Collateral Amount Amount restricted from transfer Amount of Restricted Net Assets Consolidated and Unconsolidated Subsidiaries Amount of restricted net assets of consolidated and unconsolidated subsidiaries. Maximum percent of FHLB advances to total assets Maximum Percent of FHLB Advances to Total Assets Maximum Percent of FHLB Advances to Total Assets Percent of FHLB advances to total debt obligations outstanding Percent of FHLB Advances to Total Debt Obligations Outstanding Percent of FHLB Advances to Total Debt Obligations Outstanding Ownership interest in LCFH Noncontrolling Interest, Ownership Percentage by Parent Retained earnings, appropriated Retained Earnings, Appropriated Debt instrument, minimum number of days to give notice for redemption without penalty Debt Instrument, Redemption Period, Minimum Days to Give Notice Debt Instrument, Redemption Period, Minimum Number of Days to Give Notice Debt instrument, maximum number of days to give notice for redemption without penalty Debt Instrument, Redemption Period, Maximum Days to Give Notice Debt Instrument, Redemption Period, Maximum Number of Days to Give Notice Debt instrument, repurchase price amount Debt Instrument, Repurchase Amount Debt instrument, repurchased face amount Debt Instrument, Repurchased Face Amount Debt instrument, redemption price percentage Debt Instrument, Redemption Price, Percentage Proceeds from Issuance of Senior Long-term Debt Proceeds from Issuance of Senior Long-term Debt Derivative Instruments and Hedging Activities Disclosure [Abstract] DERIVATIVE INSTRUMENTS Derivative Instruments and Hedging Activities Disclosure [Text Block] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Consolidated Joint Ventures Noncontrolling Interest in Consolidated Joint Ventures [Member] This element represents that portion of equity (net assets) in a subsidiary related to consolidated joint ventures not attributable, directly or indirectly, to the parent. A noncontrolling interest is sometimes called a minority interest. Adjustments for Error Corrections [Axis] Adjustments for Error Corrections [Axis] Adjustments for Error Correction [Domain] Adjustments for Error Correction [Domain] Out-of-Period Adjustment Related to Prior Years Out-of-Period Adjustment Related to Prior Years [Member] Out-of-Period Adjustment Related to Prior Years Apartment Building Apartment Building [Member] Ladder Capital Realty Income Partnership I LP Ladder Capital Realty Income Partnership ILP [Member] Represents the information pertaining to Ladder Capital Realty Income Partnership I LP. LP Units Limited Partner [Member] Limited liability company Limited Liability Company [Member] Co-venturer Co-venturer [Member] Partner Type [Axis] Partner Type [Axis] Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] Operating Partner Other Ownership Interest [Member] Construction Loan Construction Loan Payable [Member] First mortgage loan Mezzanine Loan Mezzaine Loan [Member] Mezzanine Loan [Member] Investments in unconsolidated joint ventures Ownership interest (as a percent) Equity Method Investment, Ownership Percentage Minimum Average Net Equity Partnership Investment as Basis for Management Fee Reduction Minimum Average Net Equity Partnership Investment as Basis for Management Fee Reduction Minimum Average Net Equity Partnership Investment as Basis for Management Fee Reduction Distributions from operations of investment in unconsolidated joint ventures Proceeds from Equity Method Investment, Distribution Sales Commissions and Fees Sales Commissions and Fees Percentage of equity kicker received with right to convert upon capital event Percentage of Equity Interest Received with Right to Convert upon Capital Event Associated with Loan Origination Percentage of Equity Interest Received with Right to Convert upon Capital Event Associated with Loan Origination Preferred return used to determine distribution of excess cash flow (as a percent) Equity Method Investments Preferred Return Rate used to Determine Distribution of Excess Cash Flow Percent Percentage of preferred return used to determine distribution of excess cash flow under an equity method investment of the entity. Percentage of distribution of all excess cash flows and all disposition proceeds upon any sale entitled after consideration of preferred return and return of equity remaining in the property to operating partner Equity Method Investments Percentage of Distribution of Excess Cash Flows and All Disposition Proceeds upon any Sale Represents the percentage of distribution of all excess cash flows and all disposition proceeds upon any sale entitled after consideration of preferred return and return of equity remaining in the property to operating partner under an equity method investment of the entity. Percentage of investment of operating partner Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest Amount contributed Equity Method Investment, Aggregate Cost Profit multiplier ratio Profit Multiplier Ratio Profit Multiplier Ratio Ownership percentage after achievement of profit multiplier ratio Equity Method Investment, Ownership Percentage After Achievement of Profit Multiplier Equity Method Investment, Ownership Percentage After Achievement of Profit Multiplier Expenses from investment Equity Method Investment Summarized Financial Information Expenses Represents the amount of expenses reported by an equity method investment of the entity. Interest costs capitalized Interest Costs Capitalized Loans payable outstanding from unconsolidated joint venture Contractual Obligation Number of real estate properties Number of Real Estate Properties Number of real estate properties, under contract Number Of Real Estate Properties, Under Contract Number Of Real Estate Properties, Under Contract Real estate properties, under contract Real Estate Sales, Under Contract Real Estate Sales, Under Contract Real estate properties, under contract, deposit Real Estate Sales, Under Contract, Deposit Percentage Real Estate Sales, Under Contract, Deposit Percentage Outstanding amount under credit agreement Line of Credit, Current Remaining capital commitment to operating partner Partner Capital Commitment Partner Capital Commitment EARNINGS PER SHARE Earnings Per Share [Text Block] Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Brickell Heights Commercial LLC Brickell Heights Commercial LLC [Member] Brickell Heights Commercial LLC [Member] Related Related [Member] Related Consolidated Joint Venture Corporate Joint Venture [Member] Andrew Steiner Andrew Steiner [Member] Andrew Steiner [Member] Related Special Assets LLC Related Special Assets LLC [Member] Related Special Assets LLC [Member] The Related Group of Florida The Related Group of Florida [Member] The Related Group of Florida [Member] DLA Piper LLP (US) DLA Piper LLP (US) [Member] DLA Piper LLP (US) [Member] Mr. Steiner Mr. Steiner [Member] Mr. Steiner [Member] RELATED PARTY TRANSACTIONS Related Party Transaction [Line Items] Investment in mutual fund Investment Owned, at Cost Fee earned on assets under management (as percentage) Asset Management Fees, Percentage Asset Management Fees, Percentage Fund's cap expense (as percentage) Asset Management Expense Cap, Percentage Asset Management Expense Cap, Percentage Related party purchases of shares from shareholders Related Party Transaction, Related Party Purchases of Shares From Shareholders Related Party Transaction, Related Party Purchases of Shares From Shareholders Mortgage loan participation purchased by related party Loans and Leases Receivable, Related Parties, Mortgage Participation Purchased Loans and Leases Receivable, Related Parties, Mortgage Participation Purchased Participating mortgage loan amount (up to) Loans and Leases Receivable, Related Parties, Participating Mortgage Loan Loans and Leases Receivable, Related Parties, Participating Mortgage Loan Percentage of loans receivable with fixed rates of interest Loans Receivable With Fixed Rates Of Interest, Percentage Loans Receivable With Fixed Rates Of Interest, Percentage Loans receivable from related party Loans and Leases Receivable, Related Parties Ownership Interest (percent) Real Estate Properties, Ownership Interest Real Estate Properties, Ownership Interest Interest income, related party Interest Income, Related Party Fees for legal expenses Related Party Transaction, Expenses from Transactions with Related Party Compensation amount (more than) Related Party Transaction, Compensation Amount Related Party Transaction, Compensation Amount Schedule of offsetting of financial assets Offsetting Assets [Table Text Block] Schedule of offsetting of financial liabilities Offsetting Liabilities [Table Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2014 Omnibus Incentive Plan Omnibus Incentive Plan 2014 [Member] Represents information concerning the 2014 Omnibus Incentive Plan. Other Employee/Director Awards Other Employee and Director Awards [Member] Other Employee and Director Awards [Member] Phantom Equity Investment Plan Phantom Equity Investment Plan [Member] Represents information concerning the Phantom Equity Investment plan. Award Date [Axis] Award Date [Axis] Award Date [Domain] Award Date [Domain] Annual Incentive Awards Granted in 2015 with Respect to 2014 Performance 2015 Annual Restricted Stock, Option Awards [Member] 2015 Annual Restricted Stock, Option Awards [Member] Annual Incentive Awards Granted in 2016 with Respect to 2015 Performance 2016 Annual Restricted Stock, Option Awards [Member] 2016 Annual Restricted Stock, Option Awards [Member] Annual Incentive Awards Granted in 2017 With Respect to 2016 Performance 2017 Annual Restricted Stock Awards [Member] 2017 Annual Restricted Stock Awards [Member] Other 2017 Restricted Stock Awards 2017 Other Restricted Stock Awards [Member] 2017 Other Restricted Stock Awards [Member] Annual Incentive Awards Granted in 2017 With Respect to 2017 Performance 2017 Annual Incentive Awards [Member] 2017 Annual Incentive Awards [Member] 2018 Restricted Stock Awards 2018 Annual Restricted Stock Awards [Member] 2018 Annual Restricted Stock Awards [Member] Other 2018 Restricted Stock Awards Other 2018 Restricted Stock Awards [Member] Other 2018 Restricted Stock Awards [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Recognized equity based compensation expense Allocated Share-based Compensation Expense Ladder Capital Corp Deferred Compensation Plan Deferred Compensation Arrangement with Individual, Compensation Expense Bonus Expense Bonus Expense Bonus Expense Statement of Comprehensive Income [Abstract] Net income (loss) Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized gain (loss) on securities, net of tax: Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax [Abstract] Unrealized gain (loss) on real estate securities, available for sale Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Reclassification adjustment for (gains) included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive (income) loss attributable to noncontrolling interest in consolidated joint ventures Comprehensive income of combined Class A common shareholders and Operating Partnership unitholders Comprehensive Income Net of Tax Including Noncontrolling Interest in Operating Partnership Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity and noncontrolling interest in operating partnership. Excludes changes in equity resulting from investments by owners and distributions to owners. Comprehensive (income) attributable to noncontrolling interest in operating partnership Noncontrolling Interest in Comprehensive Income (Loss) Operating Partnerships Nonredeemable Amount after tax of comprehensive income (loss) attributable to nonredeemable noncontrolling partner in an operating partnership. Comprehensive income attributable to Class A common shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] 2021 Notes Senior Notes Due 2021 [Member] Represents information pertaining to the senior notes that mature August 1, 2021. 2022 Notes Senior Notes Due 2022 [Member] Senior Notes Due 2022 2025 Notes Senior Notes Due 2025 [Member] Senior Notes Due 2025 [Member] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Unamortized debt issuance costs Debt issued Debt instrument, authorized repurchase amount Debt Instrument, Authorized Repurchase Amount Debt Instrument, Authorized Repurchase Amount INVESTMENT IN UNCONSOLIDATED JOINT VENTURES Equity Method Investments and Joint Ventures Disclosure [Text Block] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] In-place leases intangibles In Place Leases Intangibles [Member] Represents information pertaining to in-place leases intangibles. Amortization Expense Amortization Expense [Member] Amortization Expense [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] 2019 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Total Commitments and Contingencies Disclosure [Abstract] Schedule of Fair Value, Off-balance Sheet Risks [Table] Schedule of Fair Value, Off-balance Sheet Risks [Table] Provision for loan losses Unfunded Loan Commitments Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Number of extension options Operating Lease Number of Extension Options Represents the number of extension options available under operating lease. Rent expense Operating Leases, Rent Expense Unfunded commitments of mortgage loan receivables held for investment Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset Statement of Cash Flows [Abstract] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Operating Partnership Partnership Interest [Member] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] (Gain) loss on extinguishment/defeasance of debt Depreciation and amortization Unrealized (gain) loss on derivative instruments Unrealized Gain (Loss) on Derivatives Unrealized (gain) loss on equity securities Unrealized (gain) loss on Agency interest-only securities Debt Securities, Available-for-sale, Unrealized Gain (Loss) Unrealized (gain) loss on investment in mutual fund Unrealized Gain (Loss) on Investments Provision for loan losses Amortization of equity based compensation Share-based Compensation Amortization of deferred financing costs included in interest expense Amortization of Debt Issuance Costs and Discounts Amortization of premium on mortgage loan financing Amortization of above- and below-market lease intangibles Amortization of above and below Market Leases Amortization of premium/(accretion) of discount and other fees on loans Accretion (Amortization) of Discounts and Premiums, Loans Accretion (Amortization) of Discounts and Premiums, Loans Amortization of premium/(accretion) of discount and other fees on securities Accretion (Amortization) of Discounts and Premiums, Investments Realized (gain) loss on sale of mortgage loan receivables held for sale Realized (gain) loss on real estate securities Realized gain on sale of real estate, net Realized gain on sale of derivative instruments Gain (Loss) on Sale of Derivatives Origination of mortgage loan receivables held for sale Payments for Origination of Mortgage Loans Held-for-sale Purchases of mortgage loan receivables held for sale Payments to Purchase Mortgage Loans Held-for-sale Repayment of mortgage loan receivables held for sale Proceeds from Collection of Mortgage Loans Held-for-sale Proceeds from sales of mortgage loan receivables held for sale Proceeds from Sale of Mortgage Loans Held-for-sale (Income) loss from investments in unconsolidated joint ventures in excess of distributions received Deferred tax asset (liability) Increase (Decrease) in Deferred Income Taxes Payments pursuant to tax receivable agreement Payments Pursuant To Tax Receivable Agreement Payments Pursuant To Tax Receivable Agreement Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Other assets Increase (Decrease) in Other Operating Assets Accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchase of derivative instruments Payments for (Proceeds from) Derivative Instrument, Investing Activities Sale of derivative instruments Proceeds from Derivative Instrument, Investing Activities Purchases of real estate securities Payments to Acquire Real Estate Securities Payments to Acquire Real Estate Securities Repayment of real estate securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Proceeds from sales of real estate securities Proceeds from Sale of Real Estate Securities Proceeds from Sale of Real Estate Securities Proceeds from sale of FHLB stock Proceeds from Sale of Federal Reserve Bank Stock Origination of mortgage loan receivables held for investment Payments to Acquire Loans and Leases Held For Investment and Origination of Loans The cash outflow from purchases of loans held-for-investment or purchases of leases held-for-investment or origination of loans. Purchases of mortgage loan receivables held for investment Payments to Acquire Loans and Leases Held-for-investment Repayment of mortgage loan receivables held for investment Proceeds from Principal Repayments on Loans and Leases Held-for-investment Basis recovery of Agency interest-only securities Proceeds Of Basis Recovery Of Agency Interest-Only Securities Proceeds Of Basis Recovery Of Agency Interest-Only Securities Capital contributions to investment in unconsolidated joint ventures Payments to Acquire Equity Method Investments Distributions received from investments in unconsolidated joint ventures in excess of income Proceeds from Equity Method Investment, Distribution, Return of Capital Capitalization of interest on investment in unconsolidated joint ventures Interest Paid, Capitalized, Investing Activities Capital contributions to investment in mutual fund Payments to Acquire Investments Purchases of real estate Payments to Acquire Real Estate Held-for-investment Capital improvements of real estate Payments for Capital Improvements Proceeds from sale of real estate Proceeds from Sale of Real Estate Held-for-investment Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Deferred financing costs paid Payments of Financing Costs Repayment of borrowings under debt obligations Repayments of Borrowings Under Debt Obligations Repayments of Borrowings Under Debt Obligations Cash dividends paid to Class A common shareholders Payments of Ordinary Dividends Capital contributed by noncontrolling interests in consolidated joint ventures Proceeds from Noncontrolling Interests Capital distributed to noncontrolling interests Payments to Noncontrolling Interests Payment of liability assumed in exchange for shares for the minimum withholding taxes on vesting restricted stock Payments Related to Tax Withholding for Share-based Compensation Purchase of treasury stock Payments for Repurchase of Common Stock Issuance of common stock Proceeds from Issuance of Common Stock Common stock offering costs Payments of Stock Issuance Costs Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Cash, cash equivalents and restricted cash at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents and restricted cash at end of period Supplemental information: Supplemental Cash Flow Information [Abstract] Cash paid for interest, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid (received) for income taxes Income Taxes Paid, Net Non-cash investing and financing activities: Supplemental Disclosure of Non Cash Investing Activities [Abstract] Supplemental Disclosure of Non Cash Investing Activities [Abstract] Securities and derivatives purchased, not settled Other Significant Noncash Transaction, Securities and Derivatives Purchased Other Significant Noncash Transaction, Securities and Derivatives Purchased Securities and derivatives sold, not settled Other Significant Noncash Transaction, Securities Sold Other Significant Noncash Transaction, Securities Sold Origination of mortgage loans receivable held for investment Origination of Mortgage Loans Receivable Held for Investment Origination of Mortgage Loans Receivable Held for Investment Repayment in transit of mortgage loans receivable held for investment (other assets) Increase (Decrease), In Transit Of Mortgage Loans Receivable Held For Investment Increase (Decrease), In Transit Of Mortgage Loans Receivable Held For Investment Transfer from mortgage loans receivable held for sale to mortgage loans receivable held for investment, at amortized cost Transfer from Mortgage Loans Receivable Held for Sale to Mortgage Loans Receivable Held for Investment, at Amortized Cost Transfer from Mortgage Loans Receivable Held for Sale to Mortgage Loans Receivable Held for Investment, at Amortized Cost Proceeds from sale of real estate Non-Cash Proceeds from Sale Of Real Estate Non-Cash Proceeds from Sale Of Real Estate Reduction in proceeds from sales of real estate Proceeds From Sales Of Mortgage Loan Receivables Held For Sale Proceeds From Sales Of Mortgage Loan Receivables Held For Sale Assumption of debt obligations by real estate buyer/defeasance of debt and related costs Assumption of Debt Obligations by Real Estate Buyer Assumption of Debt Obligations by Real Estate Buyer Exchange of noncontrolling interest for common stock Exchange of Noncontrolling Interest for Common Stock Represents the amount of exchange of noncontrolling interest for common stock under a non-cash transaction. Change in deferred tax asset related to exchanges of noncontrolling interest for common stock Deferred Tax Asset, Tax Receivable Agreement, Increase (Decrease) Deferred Tax Asset, Tax Receivable Agreement, Increase (Decrease) Increase in amount payable pursuant to tax receivable agreement Tax Receivable Agreement Liabilities Assumed in Noncash Operating Activity Represents the value of payable pursuant to the tax receivable agreement in noncash transactions. Rebalancing of ownership percentage between Company and Operating Partnership Noncash Rebalancing of Ownership Percentage Between Entity and Operating Partnership Noncash Rebalancing of Ownership Percentage Between Entity and Operating Partnership Dividends declared, not paid Dividends Declared, Not paid Dividends Declared, Not paid Stock dividends Dividends, Stock Proceeds from sale of mortgage loans held for sale from prior years Proceeds From Sale Of Mortgage Loans Held For Sale From Prior Years Proceeds From Sale Of Mortgage Loans Held For Sale From Prior Years Proceeds from sale of real estate held-for-investment from prior years Proceeds From Sale Of Real Estate Held-For-Investment From Prior Years Proceeds From Sale Of Real Estate Held-For-Investment From Prior Years Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash and Investments Cash, cash equivalents and restricted cash at end of period Derivatives Offsetting Derivative Liabilities [Abstract] Gross amounts of recognized liabilities Derivative Liability, Fair Value, Gross Liability Gross amounts offset in the balance sheet Derivative Liability, Fair Value, Gross Asset Net amounts of liabilities presented in the balance sheet Derivative Liability Gross amounts not offset in the balance sheet Derivative Liability, Fair Value, Amount Not Offset Against Collateral [Abstract] Financial instruments collateral Derivative Collateral Right to Reclaim Financial Instruments Amount of right to receive financial instruments collateral under master netting arrangements that have not been offset against derivative liabilities. Cash collateral posted/(received) Derivative, Collateral, Right to Reclaim Cash Net amount Derivative Liability, Fair Value, Amount Offset Against Collateral Repurchase agreements Offsetting Securities Sold under Agreements to Repurchase [Abstract] Net amounts of liabilities presented in the balance sheet Securities Sold under Agreements to Repurchase Gross amounts not offset in the balance sheet Securities Sold under Agreements to Repurchase Gross Amounts Not Offset [Abstract] Financial instruments collateral Securities Sold under Agreements to Repurchase Collateral Right to Reclaim Financial Instruments Amount of right to receive financial instruments collateral under master netting arrangements that have not been offset against securities sold under agreement to repurchase. Cash collateral posted/(received) Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Cash Net amount Securities Sold under Agreements to Repurchase, Amount Offset Against Collateral Total Offsetting Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned [Abstract] Gross amounts of recognized liabilities Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Gross Gross amounts offset in the balance sheet Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Asset Net amounts of liabilities presented in the balance sheet Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned Gross amounts not offset in the balance sheet Derivative Liability Securities Sold under Agreements to Resell Securities Loaned a Gross Amounts Not Offset [Abstract] Financial instruments collateral Derivative Liability Securities Sold under Agreements to Resell Securities Loaned Collateral Right to Reclaim Financial Instruments Amount of right to receive financial instrument collateral under master netting arrangements that have not been offset against derivative liabilities, securities sold under agreements to repurchase and securities loaned. Cash collateral posted/(received) Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Collateral, Right to Reclaim Cash Net amount Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Amount Offset Against Collateral Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] CMBS Commercial Mortgage Backed Securities [Member] CMBS interest-only Commercial Mortgage Backed Securities Interest Only [Member] Represents information pertaining to interest-only commercial mortgage backed securities. GNMA interest-only Government National Mortgage Association Certificates and Obligations GNMA Interest Only [Member] Represents information pertaining to interest-only government national mortgage association certificates and obligations. Agency securities US Government Agencies Debt Securities [Member] GNMA permanent securities Government National Mortgage Association Permanent Securities [Member] Represents information pertaining to GN permanent securities. Corporate bonds Corporate Bond Securities [Member] Common Stock Common Stock [Member] Provisions For Loan Losses Provisions For Loan Losses [Member] Provisions For Loan Losses [Member] FHLB stock Investment in Federal Home Loan Bank Stock [Member] Nonhedge derivatives Derivative Financial Instruments, Assets [Member] Repurchase agreements - short-term Repurchase Agreements Short Term [Member] Represents information pertaining to repurchase agreements for period within one year or the normal operating cycle, if longer. Repurchase agreements - long-term Repurchase Agreements Long Term [Member] Represents information pertaining to repurchase agreements for period longer than one year or beyond the normal operating cycle, if longer. Borrowings from the FHLB Senior unsecured notes Senior Notes [Member] Nonhedge derivatives Nonhedge Derivatives [Member] Nonhedge Derivatives [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring Fair Value, Measurements, Recurring [Member] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Internal Model Third Party Inputs Valuation Technique Internal Model Third Party Inputs Valuation Technique [Member] Represents the Internal model, third-party inputs technique used to measure fair value. Discounted Cash Flow Discounted Cash Flow Valuation Technique [Member] Represents the discounted cash flow technique used to measure fair value. FHLB stock Valuation, Cost Approach [Member] Counterparty Quotations Valuation Technique Counterparty Quotations Valuation Technique [Member] Represents the counterparty quotations technique used to measure fair value. Broker Quotations Pricing Services Valuation Technique Broker Quotations Pricing Services Valuation Technique [Member] Represents the broker quotations, pricing services technique used to measure fair value. Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Assets: Assets [Abstract] Outstanding Face Amount Assets Outstanding Face Amount Represents the outstanding face amount of assets. Nonhedge derivative assets Derivative Asset, Notional Amount Amortized Cost Basis/Purchase Price Assets Amortized Cost Basis Represents the assets at amortized cost basis. Fair Value Assets, Fair Value Disclosure Carrying Value Debt Securities, Available-for-sale Debt securities, available-for-sale, measurement input Debt Securities, Available-for-sale, Measurement Input Liabilities: Liabilities [Abstract] Outstanding Face Amount Liabilities Outstanding Face Amount Represents the outstanding face amount of liabilities. Nonhedge derivative liabilities Derivative Liability, Notional Amount Amortized Cost Basis/Purchase Price Liabilities Amortized Cost Basis Represents the liabilities at amortized cost basis. Fair Value Financial and Nonfinancial Liabilities, Fair Value Disclosure Weighted average remaining maturity/duration Fair Value Inputs Remaining Maturity Period Represents the remaining maturity period, used as an input to measure fair value. Period of short interest rate reset risk Period of Short Interest Rate Reset Risk Represents the period of short interest rate reset risk. 2014 Deferred Compensation Plan Deferred Compensation Plan 2014 [Member] Represents information concerning the 2014 Deferred Compensation Plan. Phantom Units1 Deferred Compensation Plan 2014, Phantom Units 1 [Member] Deferred Compensation Plan 2014, Phantom Units 1 [Member] Phantom Units 2 Deferred Compensation Plan 2014, Phantom Units 2 [Member] Deferred Compensation Plan 2014, Phantom Units 2 [Member] 2018 Bonus Expense Two Thousand and Eighteen Bonus Expense [Member] Two Thousand and Eighteen Bonus Expense [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Executive Officers Executive Officer [Member] Management Grantees Management Grantees [Member] Management Grantees Board of Directors Board of Directors [Member] Represents information pertaining to board of directors. New Employee New Employee [Member] New Employee Michael Mazzei Michael Mazzei [Member] Michael Mazzei [Member] Harris Chief Executive Officer [Member] Non-Management Grantee Non-Management Grantee [Member] Non-Management Grantee [Member] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock Restricted Stock [Member] Stock Options Employee Stock Option [Member] Restricted Stock With Dividend Equivalent Rights Restricted Stock With Dividend Equivalent Rights [Member] Restricted Stock With Dividend Equivalent Rights Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Time-based vesting Time Based Vesting [Member] Represents information pertaining to time-based vesting. Performance-based vesting Performance Based Vesting [Member] Represents information pertaining to performance-based vesting. Year 1 Share-based Compensation Award, Tranche Seven [Member] Share-based Compensation Award, Tranche Seven [Member] Period 1 Share-based Compensation Award, Tranche One [Member] Period 2 Share-based Compensation Award, Tranche Two [Member] Period 3 Share-based Compensation Award, Tranche Three [Member] Period 4 Share-based Compensation Award, Tranche Four [Member] Share-based Compensation Award, Tranche Four [Member] Period 5 Share-based Compensation Award, Tranche Five [Member] Share-based Compensation Award, Tranche Five [Member] Period 6 Share-based Compensation Award, Tranche Six [Member] Share-based Compensation Award, Tranche Six [Member] Period 7 Share-based Compensation Award, Tranche Eight [Member] Share-based Compensation Award, Tranche Eight [Member] Time Based Vesting on Three Year Anniversary Time Based Vesting on Three Year Anniversary [Member] Represents information pertaining to time-based vesting on three year anniversary. Aggregate value of awards granted Stock Issued During Period, Value, Restricted Stock Award, Gross Number of restricted shares granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Number of installments in which awards are vested Share Based Compensation Arrangement by Share Based Payment Award Number of Installments for Vesting of Awards Represents the number of installments in which awards are vested in equity-based compensation. Number of anniversaries in which awards are vested Share Based Compensation Arrangement by Share Based Payment Award Number Of Anniversaries For Vesting Of Awards Share Based Compensation Arrangement by Share Based Payment Award Number Of Anniversaries For Vesting Of Awards Minimum performance target percentage Share Based Compensation Arrangement by Share Based Payment Award Minimum Percentage of Return on Equity Represents the minimum percentage of return on equity as a basis of performance-based vesting in equity-based compensation. Performance period Share Based Compensation Arrangement by Share Based Payment Award Performance Period Represents the performance period as a basis of performance-based vesting in equity-based compensation. Expected To Vest (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Expected To Vest Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Expected To Vest Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Aggregate grant date fair value of stock options granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Fair Value Fair value valuation assumptions: risk-free rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Fair value valuation assumptions: dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Fair value valuation assumptions: Expected term Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Fair value valuation assumptions: volatility rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Period of recognition for unrecognized compensation costs Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Remaining vesting period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Cash dividends received Dividends, Share-based Compensation, Cash Grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Unrecognized compensation cost Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Days following the end of the participant’s employment Deferred Compensation Arrangement, Days Following The End Of The Participant’s Employment Deferred Compensation Arrangement, Days Following The End Of The Participant’s Employment Stock price, days following the end of the participant’s employment Deferred Compensation Arrangement, Stock Price, Days Following The End Of The Participant’s Employment Deferred Compensation Arrangement, Stock Price, Days Following The End Of The Participant’s Employment Units withdrawn (in shares) Deferred Compensation Arrangement with Individual Units Withdrawn Deferred Compensation Arrangement with Individual Units Withdrawn Units outstanding (in shares) Deferred Compensation Arrangement with Individual Units Outstanding Represents the number of units outstanding, as of balance sheet date, in accordance with the terms and understanding of the deferred compensation arrangement. Units unvested (in shares) Deferred Compensation Arrangement with Individual Units Unvested Represents the number of units unvested, as of balance sheet date, in accordance with the terms and understanding of the deferred compensation arrangement. Total employee's contribution, net of forfeitures and payouts related to terminations Deferred Compensation Arrangement with Individual Total Employees Contribution Represents the amount of employee's contribution, as of balance sheet date, in accordance with the terms and understanding of the deferred compensation arrangement. Accrued bonuses Accrued Bonuses Bonus payment allocated to equity based compensation Deferred Compensation Arrangement with Individual, Allocated Share-based Compensation Expense Compensation bonus Bonuses Paid Amount of cash payment for employee bonuses. Bonus expense Number of reportable segments Number of Reportable Segments Fair Value Inputs Assets and Liabilities Quantitative Information [Table] Fair Value Inputs Assets and Liabilities Quantitative Information [Table] Schedule of the inputs used in the fair value measurement of assets and liabilities. Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] CMBS interest-only Mortgage loan receivables held for sale Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Nonhedge derivatives Derivative Financial Instruments, Liabilities [Member] Repurchase agreements - short-term Repurchase agreements - long-term Senior unsecured notes Liability For Transfers Not Considered Sales Liability For Transfers Not Considered Sales [Member] Liability For Transfers Not Considered Sales [Member] FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Outstanding Face Amount Fair value of assets Derivative Asset, Notional Amount Provision for loan losses Outstanding Face Amount Fair value of liabilities Schedule of Assets Sold under Agreements to Repurchase [Table] Schedule of Assets Sold under Agreements to Repurchase [Table] Committed Securities Repurchase Facility Uncommitted Securities Repurchase Facility Revolving Credit Facility Mortgage Loan Financing Borrowings from the FHLB Federal Home Loan Bank Certificates and Obligations (FHLB) [Member] Total Debt Obligations Debt Obligations [Member] Debt Obligations [Member] 5/24/2019 Maturing on 24 May 2019 [Member] Maturing on 24 May 2019 [Member] 5/24/2018 Maturing on 24 May 2018 [Member] Maturing on 24 May 2018 [Member] 7/20/2021 Maturing on 20 July 2021 [Member] Maturing on 20 July 2021 [Member] 12/26/2019 Maturing on December 26 2019 [Member] Maturing on December 26 2019 [Member] 6/28/2019 Maturing on 28 June 2019 [Member] Maturing on 28 June 2019 [Member] 9/30/2019 Maturing on 30 September 2019 [Member] Maturing on 30 September 2019 [Member] 2/11/2019 Maturing 11 February 2019 [Member] Maturing 11 February 2019 [Member] 2/11/2018 Maturing 11 February 2018 [Member] Maturing 11 February 2018 6/6/2019 Maturing 6 December 2018 [Member] Maturing 6 December 2018 [Member] 6/6/2018 Maturing 6 June 2018 [Member] Maturing 6 June 2018 [Member] Assets Sold under Agreements to Repurchase [Line Items] Assets Sold under Agreements to Repurchase [Line Items] Committed Financing Debt Obligations Outstanding Senior Unsecured Notes Senior Notes Committed but Unfunded Securities Sold under Agreements to Repurchase Committed but Unfunded Amount Represents the committed but unfunded amount, as of the balance sheet date, of securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo. Carrying Amount of Collateral Fair Value of Collateral Securities Sold under Agreements to Repurchase, Fair Value of Collateral Additional length of period of extension options Debt Instrument Additional Length of Period of Extension Options Debt Instrument Additional Length of Period of Extension Options Purchase, not reflected in consolidated financial statement Real Estate Securities Held-For-Sale, Not Reflected in Consolidated Financial Statement Real Estate Securities Held-For-Sale, Not Reflected in Consolidated Financial Statement Securities phased in secondary market Securities Phased in Secondary Market Securities Phased in Secondary Market Series A Series A [Member] Series B Series B [Member] Collateral [Axis] Collateral [Axis] Collateral [Domain] Collateral [Domain] One Of Company Loans One Of Company Loans [Member] One Of Company Loans [Member] Two Of Company Loans Two Of Company Loans [Member] Two Of Company Loans [Member] Loan on non-accrual status Non Performing Loans Held-for-Investment [Member] Represents information pertaining to non performing loans held for investment. Outstanding face amount Carrying value Risk retention requirement, amount Real Estate Securities, Risk Retention Requirement, Amount Real Estate Securities, Risk Retention Requirement, Amount Loans receivable with fixed rates of interest Loans Receivable with Fixed Rates of Interest Loans receivable with variable rates of interest Loans Receivable with Variable Rates of Interest Loans receivable with variable rates of interest, percentage Loans Receivable With Variable Rates Of Interest, Percentage Loans Receivable With Variable Rates Of Interest, Percentage Unamortized discounts included in mortgage loan receivables held for investment, at amortized cost Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums Number of mortgage loans impaired Number of Mortgage Loans Individually Impaired Represents the number of mortgage loans individually impaired. Reserve based on targeted percentage level in portfolio Mortgage Loans Receivable, Reserve Based on Targeted Percentage Level in Portfolio Mortgage Loans Receivable, Reserve Based on Targeted Percentage Level in Portfolio Allowance for Loan and Lease Losses, Provision For Loss Resulting From On-going Bankruptcy Proceedings Allowance for Loan and Lease Losses, Provision For Loss Resulting From On-going Bankruptcy Proceedings Allowance for Loan and Lease Losses, Provision For Loss Resulting From On-going Bankruptcy Proceedings Number or loans in default Financing Receivable Recorded Investment 90 Days Past Due And Still Accruing Number of Contracts Financing Receivable Recorded Investment 90 Days Past Due And Still Accruing Number of Contracts Loans in default, carrying value Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Direct capitalization rate Fair Value Inputs, Direct Capitalization Rate Fair Value Inputs, Direct Capitalization Rate Percentage of equity kicker not subject to investment Financing Receivable, Equity Interest Not Subject To Dilution, Percentage Financing Receivable, Equity Interest Not Subject To Dilution, Percentage Loans in default, no losses expected Loans In Default, No Losses Expected Loans In Default, No Losses Expected Loans nonaccrual status, amount Financing Receivable, Recorded Investment, Nonaccrual Status Number of Shares Nonvested Other than Options [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Nonvested/Outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Nonvested/Outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward] Nonvested/Outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Number of Shares Expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Nonvested/Outstanding (in shares) Exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Statement of Stockholders' Equity [Abstract] Additional Paid- in-Capital Additional Paid-in Capital [Member] Treasury Stock Treasury Stock [Member] Retained Earnings (Dividends in Excess of Earnings) Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Operating Partnership Noncontrolling Interest in Operating Partnership [Member] This element represents that portion of equity (net assets) in a subsidiary related to operating partnership not attributable, directly or indirectly, to the parent. A noncontrolling interest is sometimes called a minority interest. Increase Decrease in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance (in shares) Shares, Outstanding Beginning Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Contributions Partners' Capital Account, Contributions Distributions Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Equity based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Issuance of common stock (in shares) Stock Issued During Period, Shares, New Issues Issuance of common stock Stock Issued During Period, Value, New Issues Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Grants of restricted stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Grants of restricted stock Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Purchase of treasury stock (in shares) Purchase of treasury stock Shares acquired to satisfy minimum required federal and state tax withholding on vesting restricted stock and units (in shares) Shares Paid for Tax Withholding for Share Based Compensation Shares acquired to satisfy minimum required federal and state tax withholding on vesting restricted stock and units Adjustments Related to Tax Withholding for Share-based Compensation Forfeitures (in shares) Stock Issued During Period, Shares, Share-based Compensation, Forfeited Forfeitures Stock Issued During Period, Value, Share-based Compensation, Forfeited Dividends declared Dividends Stock dividends (in shares) Stock Dividends, Shares Stock dividends Stock Issued During Period, Value, Stock Dividend Exchange of noncontrolling interest for common stock Stock Issued During Period Shares Exchange of Noncontrolling Interest Number of shares of stock issued during the period pursuant to exchange of noncontrolling interest. Exchange of noncontrolling interest for common stock Adjustments to Additional Paid in Capital Exchange of Noncontrolling Interest for Common Stock Adjustments to Additional Paid in Capital Exchange of Noncontrolling Interest for Common Stock Adjustments to Additional Paid in Capital, Adjustment to Tax Receivable Agreement as Result of Exchange of Class B Share Adjustments to Additional Paid in Capital, Adjustment to Tax Receivable Agreement as Result of Exchange of Class B Share Adjustments to Additional Paid in Capital, Adjustment to Tax Receivable Agreement as Result of Exchange of Class B Shares Other comprehensive income (loss) Rebalancing of ownership percentage between Company and Operating Partnership Adjustments to Additional Paid in Capital Rebalancing of Ownership Percentage Between Entity and Operating Partnership Value Represents the amount of increase (decrease) in additional paid in capital (APIC) due to rebalancing ownership percentage between entity and operating partnership. Ending Balance (in shares) Ending Balance Financial Position Equity Method Investment, Summarized Financial Information, Liabilities and Equity [Abstract] Total assets Equity Method Investment, Summarized Financial Information, Assets Total liabilities Equity Method Investment, Summarized Financial Information, Liabilities Partners’/members’ capital Equity Method Investment Summarized Financial Information, Equity Results from Operations Equity Method Investment, Summarized Financial Information, Income Statement [Abstract] Total revenues Equity Method Investment, Summarized Financial Information, Revenue Total expenses Net income (loss) Equity Method Investment, Summarized Financial Information, Net Income (Loss) Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] ORGANIZATION AND OPERATIONS Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Commercial Real Estate Commercial Real Estate [Member] Residential Real Estate Residential Real Estate [Member] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] Beginning Balance Reclassification of intangibles to accumulated amortization SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Other Addition Improvements and additions Real Estate Improvements And Additions Real Estate Improvements And Additions Dispositions SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Cost of Investment in Real Estate Sold Ending Balance Schedule of Company's performance evaluation by segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Leases Leases, Operating [Abstract] Future minimum rental payments Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2019 Operating Leases, Future Minimum Payments, Remainder of Fiscal Year 2020 Operating Leases, Future Minimum Payments, Due in Two Years 2021 Operating Leases, Future Minimum Payments, Due in Three Years 2022 Operating Leases, Future Minimum Payments, Due in Four Years 2023 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Within 1 year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value 1-5 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value 5-10 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value After 10 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value Total Asset Specific Reserve, Company Loan Asset Specific Reserve, Company Loan [Member] Asset Specific Reserve, Company Loan [Member] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] Activity in loan portfolio SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] Origination of mortgage loan receivables Repayment of mortgage loan receivables Proceeds from sales of mortgage loan receivables SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Cost of Mortgage Sold Realized gain on sale of mortgage loan receivables Accretion/amortization of discount, premium and other fees Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Balance at the beginning of the period, provision for loan losses Loan loss provision Balance at the end of the period, provision for loan losses Realized losses on loans recorded as other than temporary impairments Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held Loans held for sale transferred loan held for investment, book value Loans Held-for-sale Transferred to Portfolio Loans, Carrying Amount Loans Held-for-sale Transferred to Portfolio Loans, Carrying Amount Loans held for sale transferred to loans held for investments, fair value Loans from held for sale transferred to portfolio loans, remaining maturity Mortgage loans transfered Mortgage Loans Transfered Held for Sale to Investment Mortgage Loans Transfered Held for Sale to Investment Provisions on collateral dependent loans Payments of Mortgage Loans Receivable Held for Sale Payments of Mortgage Loans Receivable Held for Sale Payments of Mortgage Loans Receivable Held for Sale Repayment of Mortgage Loans Receivable Held for Investment Repayment of Mortgage Loans Receivable Held for Investment Repayment of Mortgage Loans Receivable Held for Investment REAL ESTATE AND RELATED LEASE INTANGIBLES, NET Real Estate Owned [Text Block] Schedule IV - Mortgage Loans on Real Estate SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Text Block] STOCK BASED AND OTHER COMPENSATION PLANS Disclosure of Compensation Related Costs, Share-based Payments [Text Block] EQUITY STRUCTURE AND ACCOUNTS Stockholders' Equity Note Disclosure [Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segment Operating Segments [Member] Corporate/Other Corporate, Non-Segment [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Loans Loans [Member] Securities Available-for-sale Securities [Member] Real Estate Real Estate [Member] Senior Unsecured Notes SEGMENT REPORTING Segment Reporting Information [Line Items] Income Statement [Abstract] Interest income Interest expense Provision for loan losses Operating lease income Tenant recoveries Gain on securities Debt and Equity Securities, Gain (Loss) Unrealized gain (loss) on Agency interest-only securities Net result from derivative transactions Gain (loss) on extinguishment/defeasance of debt Salaries and employee benefits Operating expenses Real estate operating expenses Fee expense Depreciation and amortization Total costs and expenses Income tax (expense) benefit Total assets Assets Investment in FHLB stock Federal Home Loan Bank Stock Deferred tax liabilities Deferred Tax Liabilities, Net Senior Notes Professional Fees Professional Fees Depreciation expense Depreciation Amortization expense Amortization of Deferred Charges Total real estate depreciation and amortization expense Depreciation, Depletion and Amortization, Nonproduction Depreciation on corporate fixed assets Depreciation on Corporate Fixed Assets Represents the amount of depreciation on corporate fixed assets that reflects the allocation of the cost of tangible assets over the assets useful lives. Includes production and non-production related depreciation. Noncontrolling Interest [Table] Noncontrolling Interest [Table] Accumulated Other Comprehensive Income (Loss) and Additional Paid-in Capital Accumulated Other Comprehensive Income (Loss) and Additional Paid-in Capital [Member] Accumulated Other Comprehensive Income (Loss) and Additional Paid-in Capital [Member] Industrial Properties Industrial Property [Member] Condominium Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Decrease in noncontrolling interest in Operating Partnership Noncontrolling Interest, Period Increase (Decrease) Number of consolidated joint ventures Number of Consolidated Joint Ventures Number of Consolidated Joint Ventures Noncontrolling interest ownership Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Class of Treasury Stock Class of Treasury Stock [Table Text Block] Schedule of dividends declared and paid Dividends Declared [Table Text Block] Schedule of accumulated other comprehensive Income Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Derivative [Table] Derivative [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Futures Future [Member] 5-year Swap Interest Rate Future Five Year US Treasury Note [Member] Represents information pertaining to future based contracts for a five year US treasury note based on a market interest rate (index rate) over a specified period. 10-year Swap Interest Rate Future Ten Year US Treasury Note [Member] Represents information pertaining to future based contracts for a ten year US treasury note based on a market interest rate (index rate) over a specified period. 5-year U.S. Treasury Note 5-year U.S. Treasury Note [Member] 5-year U.S. Treasury Note 10-year U.S. Treasury Note 10-year U.S. Treasury Note [Member] 10-year U.S. Treasury Note 1 Month LIBOR Interest Rate Cap [Member] Interest Rate Swap Interest Rate Swap [Member] CDX Credit Risk Contract CDX [Member] Represents information pertaining to credit risk derivative instruments CDX which are credit default swap indices. Credit Derivatives Credit Risk Contract [Member] Derivative [Line Items] Derivative [Line Items] Notional Derivative, Notional Amount Fair value, Asset Fair value, Liability Remaining Maturity Derivative, Remaining Maturity Accounting Policies [Abstract] Basis of Accounting and Principles of Consolidation Basis of Accounting and Principles of Consolidation [Policy Text Block] Disclosure of accounting policy for the entity's basis of accounting and principles of consolidation. Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Mortgage Loan Receivables Held for Investment Finance, Loan and Lease Receivables, Held-for-investment, Policy [Policy Text Block] Provision for Loan Losses Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Mortgage Loan Receivables Held for Sale Finance, Loan and Lease Receivables, Held-for-sale, Policy [Policy Text Block] Real Estate Securities Real Estate, Policy [Policy Text Block] Real Estate Property, Plant and Equipment, Policy [Policy Text Block] Allocation of Purchase Price for Acquired Real Estate Business Combinations Policy [Policy Text Block] Impairment of Property Held for Use Property, Plant and Equipment, Impairment [Policy Text Block] Real Estate Held for Sale Real Estate Held for Development and Sale, Policy [Policy Text Block] Sales of Real Estate Sales of Real Estate [Policy Text Block] [Policy Text Block] Sales of Real Estate [Policy Text Block] Investments in Unconsolidated Joint Ventures Equity Method Investments [Policy Text Block] Capitalization of Interest Interest Capitalization, Policy [Policy Text Block] Valuation of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Valuation Hierarchy Fair Value Measurement, Policy [Policy Text Block] Tuebor/Federal Home Loan Bank Membership Federal Home Loan Bank Membership [Policy Text Block] Federal Home Loan Bank Membership [Policy Text Block] Debt Issuance Costs Debt, Policy [Policy Text Block] Derivative Instruments Derivatives, Policy [Policy Text Block] Repurchase Agreements Repurchase and Resale Agreements Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Deferred Tax Asset and Amount Due Pursuant to Tax Receivable Agreement Deferred Tax Asset and Amount Due Pursuant to Tax Receivable Agreement [Policy Text Block] Deferred Tax Asset and Amount Due Pursuant to Tax Receivable Agreement [Policy Text Block] Interest Income Revenue from Contract with Customer [Policy Text Block] Recognition of Operating Lease Income and Tenant Recoveries Revenue Recognition Leases, Operating [Policy Text Block] Sales of Loans Sales of Loans [Policy Text Block] Sales of Loans [Policy Text Block] Transfers of Financial Assets Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Sales, Policy [Policy Text Block] Fee Expense Fee Expense [Policy Text Block] Fee Expense [Policy Text Block] Stock Based Compensation Plan Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Recently Adopted Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Hotel Hotel [Member] Hotel, Industrial, Land, Mobile Home Park, Mixed Use, Multi-family, Office, Other Commercial, Retail [Member] Hotel, Industrial, Land, Mobile Home Park, Mixed Use, Multi-family, Office, Other Commercial, Retail [Member] Hotel, Industrial, Land, Mobile Home Park, Mixed Use Multi-family, Office, Other Commercial, Retail SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Axis] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Axis] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Domain] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Domain] First Mortgage, 5.15 Percent First Mortgage, 5.15 Percent [Member] First Mortgage, 5.15 Percent First Mortgage 5.75 Percent First Mortgage 5.75 Percent [Member] First Mortgage 5.75 Percent First Mortgages Individually Less than Three Percent First Mortgages Individually Less than Three Percent [Member] Represents information pertaining to the first mortgages of individually less than three percent. Subordinate Mortgages Individually Less Than Three Percent Subordinate Mortgages Individually Less Than Three Percent [Member] Represents information pertaining to the subordinate mortgages of individually less than three percent. Second Mortgage Second Mortgage [Member] Prior Liens SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Prior Lien, Amount Face amount of Mortgages SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Gross SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Gross SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Gross Carrying Amount of Mortgages Aggregate cost for U.S. federal tax income purposes SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Federal Income Tax Basis Principal Amount of Mortgages Subject to Delinquent Principal or Interest SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Principal Amount of Delinquent Loans Repayment of mortgage loan receivables Proceeds from sales of mortgage loan receivables Transfer between held for investment and held for sale Loan loss provision Allowance for Loan and Lease Losses, Period Increase (Decrease) Provision for loan losses Provision for loan losses Summary of the Company's investments in unconsolidated joint ventures, which the entity accounts for using the equity method Schedule of Entity's Investments in Unconsolidated Joint Ventures [Table Text Block] Tabular disclosure of the entity's investments in unconsolidated joint ventures. Summary of the Company's allocated earnings based on its ownership interests from investment in unconsolidated joint ventures Schedule of Entity's Allocated Earnings Based on Ownership Interests from Investment in Unconsolidated Joint Ventures [Table Text Block] Tabular disclosure of the entity's allocated earnings based on its ownership interests from investment in unconsolidated joint ventures. Summary of the combined results from operations of the unconsolidated joint ventures for the period in which the Company had investment interests Schedule of Results from Operations of Unconsolidated Joint Ventures for the Period in which Entity had Investment Interests [Table Text Block] Tabular disclosure of the results from operations of the unconsolidated joint ventures for the period in which the entity had investment interests. Grants - Class A Common Stock (restricted) dividends Dividend Declared [Member] Employee Stock Option Number of options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Granted in Period, Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Granted in Period, Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Granted in Period, Fair Value Weighted Average Fair Value (in dollars) Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Fair Value The weighted average fair value for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Recognized equity based compensation expense Schedule of future minimum rental payments Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Cash margins held as collateral for derivatives by counterparties Restricted Cash and Cash Equivalents Cash collateral held by counterparty Collateral Already Posted, Aggregate Fair Value Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-02 Accounting Standards Update 2016-02 [Member] Building Improvements Building Improvements [Member] Tax Year 2015 [Member] Tax Year 2015 [Member] State and Local Jurisdiction State and Local Jurisdiction [Member] Error Corrections and Prior Period Adjustments Restatement [Line Items] Error Corrections and Prior Period Adjustments Restatement [Line Items] Property, Plant and Equipment, Useful Life Property, Plant and Equipment, Useful Life Debt Issuance Costs, Net CMBS rated below AA Percentage of Commercial Mortgage Backed Securities with Below AA Rating Percentage of Commercial Mortgage Backed Securities with Below AA Rating Increase in tenant real estate tax recoveries on net lease property Increase (Decrease) in Tenant Real Estate Tax Recoveries on Net Lease Property Increase (Decrease) in Tenant Real Estate Tax Recoveries on Net Lease Property Reduction in depreciation and amortization Deferred financing cost amortization Amortization of Debt Issuance Costs Finance Lease, Right-of-Use Asset Finance Lease, Right-of-Use Asset Finance Lease, Liability, Noncurrent Finance Lease, Liability, Noncurrent 2019 Operating Leases, Future Minimum Payments Receivable, Remainder of Fiscal Year 2020 Operating Leases, Future Minimum Payments Receivable, in Two Years 2021 Operating Leases, Future Minimum Payments Receivable, in Three Years 2022 Operating Leases, Future Minimum Payments Receivable, in Four Years 2023 Operating Leases, Future Minimum Payments Receivable, in Five Years Thereafter Operating Leases, Future Minimum Payments Receivable, Thereafter Total Operating Leases, Future Minimum Payments Receivable Outstanding Face Amount Investment Owned, Face Amount Amortized Cost Basis/Purchase Price Debt Securities, Available-for-sale, Amortized Cost Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Number of Securities Available-for-sale Securities Number of Securities Indicates the number of real estate securities under each classification. Weighted Average Coupon % Available-for-sale Securities Weighted Average Coupon Percentage Represents the weighted average coupon percentage on available-for-sale securities under each classification. Weighted Average Yield % Available-for-sale Securities Weighted Average Yield Percentage Represents the weighted average yield on available-for-sale securities under each classification. Remaining Duration (years) Available-for-sale Securities Remaining Maturity Period Represents the remaining maturity period of available-for-sale securities under each classification. Amortized Cost Basis/Purchase Price Equity Securities, FV-NI, Cost Gains Equity Securities, FV-NI, Unrealized Gain Losses Equity Securities, FV-NI, Unrealized Loss Carrying Value Equity Securities, FV-NI Number of equity securities Number of Equity Securities Number of Equity Securities Amortized Cost Basis/Purchase Price Debt Securities, Available-for-sale, Amortized Cost and FV-NI Debt Securities, Available-for-sale, Amortized Cost and FV-NI Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax and FN-NI Unrealized Gain Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax and FN-NI Unrealized Gain Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax and FV-NI Loss Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax and FV-NI Loss Carrying Value Debt Securities, Available-for-sale and FV-NI Debt Securities, Available-for-sale and FV-NI Total number of Securities Available-for-sale Securities Number of Securities and Equity Securities Available-for-sale Securities Number of Securities and Equity Securities Swaps Unrealized Gain/(Loss) Unrealized Gain or Loss on Derivatives The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, held at each balance sheet date, that was included in earnings for the period. Realized Gain/(Loss) Derivative, Gain (Loss) on Derivative, Net Net Result from Derivative Transactions Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Variable Interest Entities [Axis] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] CLO Collateralized Loan Obligations Interest [Member] Collateralized Loan Obligations Interest [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Accrued interest receivable Accrued Interest Receivable [Member] Accrued Interest Receivable [Member] Other assets(1) Other Assets [Member] Senior and unsecured debt obligations Borrowings [Member] Accrued expenses Accrued Expenses [Member] Accrued Expenses Other liabilities Other Liabilities [Member] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Total assets Variable Interest Entity, Consolidated, Carrying Amount, Assets Total liabilities Variable Interest Entity, Consolidated, Carrying Amount, Liabilities Net equity in VIEs (eliminated in consolidation) Variable Interest Entity, Consolidated, Net Equity in Variable Interest Entity Variable Interest Entity, Consolidated, Net Equity in Variable Interest Entity Total equity Variable Interest Entity, Consolidated, Equity Variable Interest Entity, Consolidated, Equity Total liabilities and equity Variable Interest Entity, Consolidated, Liabilities And Equity Variable Interest Entity, Consolidated, Liabilities And Equity Statement of Financial Position [Abstract] Common stock, par value per share (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, authorized shares (in shares) Common Stock, Shares Authorized Common stock, issued shares (in shares) Common Stock, Shares, Issued Common stock, outstanding shares (in shares) Common Stock, Shares, Outstanding Treasury stock, shares (in shares) Treasury Stock, Shares SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward] Beginning Balance Additions SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Depreciation Expense Dispositions SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Investment in Real Estate Sold Ending Balance INCOME TAXES Income Tax Disclosure [Text Block] OFFSETTING ASSETS AND LIABILITIES Offsetting Assets and Liabilities Disclosure [Text Block] The entire disclosure for information pertaining to offsetting of assets and liabilities. SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Schedule III-Real Estate and Accumulated Depreciation SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Text Block] New York New York State Division of Taxation and Finance [Member] Accrued Expenses Accrued Liabilities [Member] Amount Payable Pursuant to Tax Receivable Agreement Amount Payable Pursuant to Tax Receivable Agreement [Member] Amount Payable Pursuant to Tax Receivable Agreement Accrued income taxes Accrued Income Taxes Unincorporated business tax payable (receivable) Unincorporated Business Tax Payable (Receivable) Represents Unincorporated Business tax payable (receivable) by the entity. Prepaid taxes Prepaid Taxes Deferred tax assets Deferred Tax Assets, Net Deferred tax liabilities Deferred tax asset relating to capital losses Deferred Tax Assets, Capital Loss Carryforwards Liability for unrecognized tax benefits for uncertain income tax positions Unrecognized Tax Benefits Percentage of applicable cash saving in income tax distributable to specified unitholders Percentage of Applicable Cash Saving in Income Tax Distributable to Specified Unitholders Represents the percentage of cash saving in income tax benefits distributable to unitholders of predecessor that choose to exchange their interests in predecessor and Class B shares of the reporting entity into Class A shares of the reporting entity under the tax receivable agreement. Percentage of applicable cash saving in income tax available for the entity Percentage of Applicable Cash Saving in Income Tax Available for Entity Represents the percentage of cash saving in income tax benefits available for the reporting entity under the tax receivable agreement. Amount due pursuant to tax receivable agreement Amount due Pursuant to Tax Receivable Agreement Represents the carrying amount of liabilities as of the balance sheet date that pertains to the amount due pursuant to the tax receivable agreement. Class B common stock, par value $0.001 per share, 100,000,000 shares authorized; 13,117,419 and 17,667,251 shares issued and outstanding Assets Restricted cash Restricted Cash Mortgage loans held by consolidated subsidiaries Loans And Leases Receivable, Mortgage Loans Held By Consolidated Subsidiaries Loans And Leases Receivable, Mortgage Loans Held By Consolidated Subsidiaries Mortgage loan receivables held for sale Loans Receivable Held for Sale Net not Part of Disposal Group or Discontinued Operation Amount classified as loans held for sale and not part of a disposal group or discontinued operation. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities. Real estate securities FHLB stock Derivative instruments Accrued interest receivable Interest Receivable Other assets Other Assets Total assets Liabilities and Equity Liabilities and Equity [Abstract] Liabilities Debt obligations, net Due to brokers Due to Correspondent Brokers Derivative instruments Amount payable pursuant to tax receivable agreement Dividends payable Dividends Payable Accrued expenses Accrued Liabilities Other liabilities Other Liabilities Total liabilities Liabilities Commitments and contingencies (Note 18) Commitments and Contingencies Equity Common stock Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Treasury stock, 2,701,162 and 2,617,587 shares, at cost Treasury Stock, Value Retained earnings (dividends in excess of earnings) Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders’ equity Stockholders' Equity Attributable to Parent Noncontrolling interest in operating partnership Noncontrolling Interest in Operating Partnerships Noncontrolling interest in consolidated joint ventures Noncontrolling Interest in Joint Ventures Total equity Total liabilities and equity Liabilities and Equity Organization and Operations [Table] Organization and Operations [Table] Disclosures pertaining to activities in organization and operations. ORGANIZATION AND OPERATIONS Organization and Operations [Line Items] MORTGAGE LOAN RECEIVABLES Mortgage Loans of Real Estate by Loan Disclosure [Text Block] The entire disclosure for mortgage loans on real estate. Grace Lake JV, LLC 24 Second Avenue Holdings LLC Earnings (loss) from investment in unconsolidated joint ventures Schedule of mortgage loan receivables Schedule of Mortgage Loan Receivable [Table Text Block] Tabular disclosure of mortgage loan receivables. Summary of mortgage loan receivables by loan type Schedule of Mortgage Loan Receivable by Loan Type [Table Text Block] Tabular disclosure of mortgage loan receivables by loan type. Schedule of provision for loan losses Schedule of Allowance for Loan and Lease Losses [Table Text Block] Tabular disclosure of changes in reserve for loan losses during the period. RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block] Provision for loan losses at beginning of period Provision for loan losses at end of period Principal balance of loans on non-accrual status CONSOLIDATED VARIABLE INTEREST ENTITIES Variable Interest Entity Disclosure [Text Block] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Groups, Including Discontinued Operations, Name [Domain] Disposal Group Name [Domain] 2018 Disposal Properties Disposal Properties 2018 [Member] Disposal Properties 2018 [Member] 2017 Disposal Properties Disposal Properties 2017 [Member] Disposal Properties 2017 2016 Disposal Properties Disposal Properties 2016 [Member] Disposal Properties 2016 [Member] Diversified Diversified [Member] Diversified [Member] Net Lease Net Lease [Member] Net Lease [Member] Las Vegas, NV El Monte, CA El Monte, California [Member] El Monte, California [Member] St. Paul, MN St. Paul, Minnesota [Member] St. Paul, Minnesota [Member] Rockland, MA Rockland, MA [Member] Rockland, MA [Member] Crawfordsville, IN Crawfordsville, IN [Member] Crawfordsville, IN [Member] Third Party Investor Third Party Investor [Member] Third Party Investor [Member] Disposal Groups, Including Discontinued Operations [Line Items] Disposal Groups, Including Discontinued Operations [Line Items] [Line Items] for Disposal Groups, Including Discontinued Operations [Table] Net Sales Proceeds(1)(2) Net Book Value Realized Gain/(Loss) Properties Number of Real Estate Properties Sold The number of real estate properties sold during the period. Units Sold Number of Units Sold in Real Estate Property Represents the number of units sold in real estate property owned during the period. Units Remaining Number of Units Remaining in Real Estate Property Number of Units Remaining in Real Estate Property Proceeds From Sale Of Real Estate Held-For-Investment From Prior Years Summary of securities which are classified as available-for-sale Debt Securities, Available-for-sale [Table Text Block] Schedule of fair value of the Company's securities by remaining maturity based upon expected cash flows Investments Classified by Contractual Maturity Date [Table Text Block] Basic Net income (loss) available for Class A common shareholders Diluted Net income (loss) available for Class A common shareholders Schedule of real estate properties by category Schedule of Real Estate Properties by Category [Table Text Block] Tabular disclosure of real estate properties by category. Schedule of depreciation and amortization expense recorded Schedule of Depreciation and Amortization Expense [Table Text Block] Tabular disclosure of depreciation and amortization expense recorded. Schedule of expected amortization expense related to the acquired in-place lease intangibles, for property owned Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Schedule of contractual future minimum rent under leases Schedule of Operating Leases Future Minimum Payments Receivable [Table Text Block] Tabular disclosure of future minimum payments receivable in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. Schedule of real estate properties acquired Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Schedule of properties sold Disposal Groups, Including Discontinued Operations [Table Text Block] Limited Partners' Capital Account by Class [Axis] Limited Partners' Capital Account by Class [Axis] Limited Partners' Capital Account, Class [Domain] Limited Partners' Capital Account, Class [Domain] Series REIT LP Units Series TRS LP Units Series TRS LP Units [Member] Series TRS LP Units [Member] Number of classes of common stock Number of Classes of Common Stock Represents the number of classes of common stock. Number of votes per share Number of Votes Per Common Stock Represents the number of votes per share of common stock. Issuance of common stock Sale of Stock, Consideration Received on Transaction Exchange of noncontrolling interest for common stock, units exchanged (in shares) Stock Issued During Period Shares Exchange of Noncontrolling Interest, Shares Exchanged Stock Issued During Period Shares Exchange of Noncontrolling Interest, Shares Exchanged Exchange of noncontrolling interest for common stock (in shares) Treasury Stock Acquired, Average Cost Per Share Treasury Stock Acquired, Average Cost Per Share Remaining amount available for repurchase Percentage of aggregate common stock outstanding under Repurchase Program Percentage of Aggregate Common Stock Outstanding Under Repurchase Program Percentage of Aggregate Common Stock Outstanding Under Repurchase Program Dividends Dividends, Common Stock, Stock Dividends, Common Stock, Stock Dividends, Share-based Compensation, Stock Dividends, Share-based Compensation, Stock Weighted-average price per share Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Shares Issued, Price Per Share Shares Issued, Price Per Share Common Stock Dividends, Shares Common Stock Dividends, Shares Diversified Land Lithia Springs, GA Lithia Springs, GA [Member] Lithia Springs, GA [Member] Isla Vista, CA Isla Vista, CA [Member] Isla Vista, CA [Member] El Monte, CA St. Paul, MN St. Paul, MN [Member] St. Paul, MN [Member] Dimmitt, TX Dimmitt, TX [Member] Dimmitt, TX [Member] Philo, IL Philo, IL [Member] Philo, IL [Member] St. Charles, MN St. Charles, MN [Member] St. Charles, MN [Member] San Antonio, TX San Antonio, TX [Member] San Antonio, TX [Member] Borger, TX Borger, TX [Member] Borger, TX [Member] Decatur-Sunnyside, IL Decatur-Sunnyside, IL [Member] Decatur-Sunnyside, IL [Member] Decatur-Pershing, IL Decatur-Pershing, IL [Member] Decatur-Pershing, IL [Member] Ewing, NJ Ewing, NJ [Member] Ewing, NJ [Member] Dryden Township, MI Dryden Township, M [Member] Dryden Township, M [Member] Purchase Price Business Combination, Consideration Transferred Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income of Noncontrolling Interests AOCI Attributable to Noncontrolling Interest [Member] Total Accumulated Other Comprehensive Income AOCI Including Portion Attributable to Noncontrolling Interest [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] AOCI Attributable to Parent [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Other comprehensive income (loss) Exchange of noncontrolling interest for common stock Stock Issued During Period Value Exchange of Noncontrolling Interest Value of stock issued pursuant to exchange of noncontrolling interest during the period. Rebalancing of ownership percentage between Company and Operating Partnership Rebalancing of Ownership Percentage Between Company and Operating Partnership Rebalancing of Ownership Percentage Between Company and Operating Partnership Schedule of breakdown of the derivatives outstanding Schedule of Derivative Instruments [Table Text Block] Schedule of net realized gains/(losses) and unrealized appreciation/(depreciation) on derivatives Schedule of Derivative Instruments Net Realized Gains (Losses) and Unrealized Appreciation (Depreciation) [Table Text Block] Tabular disclosure of net realized gains/(losses) and unrealized appreciation/(depreciation) on derivatives. Document and Entity Information Entity Registrant Name Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Entity Emerging Growth Company Entity Emerging Growth Company Entity Smaller Reporting Company Entity Small Business Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Public Float Entity Public Float Liability for unrecognized tax benefits for uncertain income tax positions Interest Income (Expense), after Provision for Loan Loss Noninterest Income Noninterest Income Costs and Expenses Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Earnings Per Share, Basic and Diluted [Abstract] Earnings Per Share, Basic and Diluted [Abstract] Measurement Input Type [Axis] Measurement Input Type [Axis] Measurement Input Type [Domain] Measurement Input Type [Domain] Yield Measurement Input, Discount Rate [Member] Prepayment speed Measurement Input, Prepayment Rate [Member] Minimum Weighted Average Maximum Duration (in years) Land Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Land Building Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Buildings Intangibles Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Below Market Lease Intangibles Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles, Below Market Leases Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles, Below Market Leases Basis difference in operating partnerships Deferred Tax Liabilities, Investment in Subsidiaries Deferred Tax Liabilities, Investment in Subsidiaries Net unrealized gains Deferred Tax Liability Unrealized Gains and Losses Deferred Tax Liability Unrealized Gains and Losses Valuation allowance Deferred Tax Liabilities, Valuation Allowance Deferred Tax Liabilities, Valuation Allowance Total Deferred Tax Liability Quarterly Financial Information Quarterly Financial Information [Table Text Block] Basis difference in operating partnerships Deferred Tax Assets, Investment in Subsidiaries Net unrealized losses Deferred Tax Assets Unrealized Gains and Losses Deferred Tax Assets Unrealized Gains and Losses Capital losses carryforward Deferred Tax Assets, Derivative Instruments Valuation allowance Deferred Tax Assets, Valuation Allowance Deferred Tax Assets, Net of Valuation Allowance Deferred Tax Assets, Net of Valuation Allowance COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block]