Fair Value Disclosures [Abstract] Schedule of Comparison of the Carrying Value and Estimated Fair Value of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Schedule of Assets and Liabilities, Measured at Fair Value on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Description Of Business [Abstract] Description Of Business [Abstract] Description Of Business [Table] Description Of Business [Table] Description Of Business [Table] Payments For Proceeds From Loans Receivable Programs [Axis] Payments For Proceeds From Loans Receivable Programs [Axis] Payments For Proceeds From Loans Receivable Programs Axis Payments For Proceeds From Loans Receivable Programs [Domain] Payments For Proceeds From Loans Receivable Programs [Domain] Payments For Proceeds From Loans Receivable Programs Domain Portfolio Program [Member] Portfolio Program [Member] Portfolio Program Member Purchase Program [Member] Purchase Program [Member] Purchase Program Member Description Of Business [Line Items] Description Of Business [Line Items] Description Of Business [Line Items] Percentage of new consumer loans Percentage Of New Consumer Loan Assignments Percentage Of New Consumer Loan Assignments Share-based Compensation [Abstract] Number of Restricted Stock Units Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Outstanding as of beginning of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted Converted (in shares) Conversion of Stock, Shares Converted Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Outstanding as of end of period (in shares) Weighted Average Grant-Date Fair Value Per Share Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Outstanding as of beginning of period (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Weighted Average Grant Date Fair Value The weighted average fair value of awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. Granted (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Converted (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Converted, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Converted, Weighted Average Grant Date Fair Value Forfeited (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Outstanding as of end of period (in usd per share) Receivables [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Receivable Type [Axis] Receivable Type [Axis] Receivable Type [Domain] Receivable [Domain] Dealer Loans [Member] Dealer Loans [Member] Dealer Loans [Member] Purchased Loans [Member] Purchased Loans [Member] Purchased Loans [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Contractual net cash flows at the time of assignment Loans Receivable Contractual Net Cash Flows At Assignment Loans Receivable Contractual Net Cash Flows At Assignment Expected net cash flows at the time of assignment Loans Receivable Expected Net Cash Flows At Assignment Loans Receivable Expected Net Cash Flows At Assignment Fair value at the time of assignment Loans Receivable Fair Value Of Net Cash Flows At Assignment Loans Receivable Fair Value Of Net Cash Flows At Assignment Loans [Axis] Loans [Axis] Loans [Axis] Loans [Domain] Loans [Domain] Loans [Domain] Loans Originating In 2005 [Member] Loans Originating In2005 [Member] Loans Originating In 2005 [Member] Loans Originating In 2006 [Member] Loans Originating In2006 [Member] Loans Originating In 2006 [Member] Loans Originating In 2007 [Member] Loans Originating In2007 [Member] Loans Originating In 2007 [Member] Loans Originating In 2008 [Member] Loans Originating In2008 [Member] Loans Originating In 2008 [Member] Loans Originating In 2009 [Member] Loans Originating In2009 [Member] Loans Originating In 2009 [Member] Loans Originating In 2010 [Member] Loans Originating In2010 [Member] Loans Originating In 2010 [Member] Loans Originating In 2011 [Member] Loans Originating In2011 [Member] Loans Originating In 2011 [Member] Loans Originating In 2012 [Member] Loans Originating In2012 [Member] Loans Originating In 2012 [Member] Loans Originating In 2013 [Member] Loans Originating In2013 [Member] Loans Originating In 2013 [Member] Loans Originating In 2014 [Member] LoansOriginatingIn2014 [Member] OriginatingIn2014 [Member] Loans Originating In First Quarter 2014 [Member] Loans Originating In Quarter One Two Thousand Fourteen [Member] Loans Originating In Quarter One Two Thousand Fourteen [Member] Loans Originating In Second Quarter 2014 [Member] Loans Originating In Quarter Two Two Thousand Fourteen [Member] Loans Originating In Quarter Two Two Thousand Fourteen [Member] Forecasted Collection Percentage Loans Receivable Forecasted Collection Percentage Loans Receivable Forecasted Collection Percentage Initial Forecasted Collection Percentage Loans Receivable Initial Forecasted Collection Percentage Loans Receivable Initial Forecasted Collection Percentage Variance In Forecasted Collection Percentage from March 31, 2014 Loans Receivable Variance In Forecasted Collection Percentage From Prior Quarter Ended Loans Receivable Variance In Forecasted Collection Percentage From Prior Quarter Ended Variance In Forecasted Collection Percentage from December 31, 2013 Loans Receivable Variance In Forecasted Collection Percentage From Prior Year Ended Loans Receivable Variance In Forecasted Collection Percentage From Prior Year Ended Variance In Initial Forecasted Collection Percentage Loans Receivable Variance In Initial Forecasted Collection Percentage Loans Receivable Variance In Initial Forecasted Collection Percentage Variance In Forecasted Collection Percentage Loans Receivable Variance In Forecasted Collection Percentage Loans Receivable Variance In Forecasted Collection Percentage Equity [Abstract] Stock Repurchases Stock Repurchases [Text Block] The entire disclosure for an entity's stock repurchases, including the description of the share repurchase program authorized by an entity's board of directors, the number of shares repurchased, the cost of the shares repurchased, the remaining maximum dollar value of shares available for repurchase under the program, and other information necessary to a fair presentation. Loan Pool Performance Meets Or Exceeds Initial Estimates [Member] Loan Pool Performance Meets Or Exceeds Initial Estimates [Member] Loan Pool Performance Meets Or Exceeds Initial Estimates [Member] Loan Pool Performance Less Than Initial Estimates [Member] Loan Pool Performance Less Than Initial Estimates [Member] Loan Pool Performance Less Than Initial Estimates [Member] Loans receivable Loans and Leases Receivable, Net of Deferred Income Allowance for credit losses Loans and Leases Receivable, Allowance Loans receivable, net Loans and Leases Receivable, Net Amount Certain Loans Acquired in Transfer Not Accounted for as Loans Accretable Yield Movement Schedule [Roll Forward] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Balance, beginning of period Certain Loans Acquired In Transfer Accounted For As Loans Accretable Yield The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. New Consumer Loan assignments Certain Loans Acquired In Transfer Accounted For As Loans Accretable Yield Additions Increases in the aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan due to the acquisition of similar loans during the period. This relates to loans with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. Finance charge income Financial Services Revenue Forecast changes Certain Loans Acquired In Transfer Accounted For As Loans Accretable Yield Reclassifications From Nonaccretable Difference Change in the estimate of cash flows expected to be collected, after acquisition of a loan, which results in an increase in accretable yield (for example, if actual cash flows are significantly greater than previously expected). This relates to loans with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. Transfers Certain Loans Acquired In Transfer Accounted For As Loans Accretable Yield Transfers Certain Loans Acquired In Transfer Accounted For As Loans Accretable Yield Transfers Balance, end of period Income Tax Disclosure [Abstract] U.S. federal statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent State income taxes Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Changes in reserve for uncertain tax positions as a result of settlements and lapsed statutes and related interest Effective Income Tax Rate Reconciliation, Tax Settlement, Percent Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Effective tax rate Effective Income Tax Rate Reconciliation, Percent Income Statement [Abstract] Revenue: Revenues [Abstract] Finance charges Premiums earned Premiums Earned, Net Other income Other Income Total revenue Revenues Costs and expenses: Costs and Expenses [Abstract] Salaries and wages Labor and Related Expense General and administrative General and Administrative Expense Sales and marketing Selling and Marketing Expense Provision for credit losses Provision for Loan and Lease Losses Interest Interest Expense Provision for claims Policyholder Benefits and Claims Incurred, Net Loss on extinguishment of debt Gains (Losses) on Extinguishment of Debt Total costs and expenses Costs and Expenses Income before provision for income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income Net Income (Loss) Attributable to Parent Net income per share: Earnings Per Share, Basic and Diluted [Abstract] Basic (in usd per share) Earnings Per Share, Basic Diluted (in usd per share) Earnings Per Share, Diluted Weighted average shares outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Description of Business Nature of Operations [Text Block] Investments, Debt and Equity Securities [Abstract] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurements [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Cost [Member] Cost [Member] Cost [Member] Estimated Fair Value [Member] Estimate of Fair Value Measurement [Member] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Within one year Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Over one year to five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Over five years to ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Total restricted securities available for sale Available-for-sale Securities, Restricted Debt Disclosure [Abstract] Debt Debt Disclosure [Text Block] Class of Treasury Stock [Table] Class of Treasury Stock [Table] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Open Market [Member] Open Market [Member] Open Market [Member] Tender Offer [Member] Tender Offer [Member] Tender Offer [Member] Other [Member] Tax Withholdings For Share Based Compensation Awards Vested [Member] Tax Withholdings For Share Based Compensation Awards Vested [Member] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Increase in number of shares authorized for repurchase Stock Repurchase Program Number Of Shares Authorized To Be Repurchased Increase Stock Repurchase Program Number Of Shares Authorized To Be Repurchased Increase Remaining number of shares authorized for repurchase Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased Common stock repurchased, shares Stock Repurchased During Period, Shares Common stock repurchased, value Stock Repurchased During Period, Value Tender offer, offering costs Stock Repurchase Program Tender Offer Offering Costs Stock Repurchase Program Tender Offer Offering Costs Loans Receivable Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Schedule of Percentage of Consumer Loans Assigned Based on Unit Volumes Schedule Of Percentage Of Consumer Loans Assigned Based On Unit Volumes [Table Text Block] Schedule Of Percentage Of Consumer Loans Assigned Based On Unit Volumes Table Text Block Schedule of Short-term Debt [Table] Schedule of Short-term Debt [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Revolving Secured Line of Credit [Member] Line of Credit [Member] Warehouse Facility II [Member] Warehouse Facility II [Member] Warehouse Facility II [Member] Warehouse Facility III [Member] Warehouse Facility III [Member] Warehouse Facility III Member Warehouse Facility IV [Member] Warehouse Facility IV [Member] Warehouse Facility IV Member Term ABS 2011-1 [Member] Term Asset Backed Secured Financings Two Thousand Eleven One [Member] Term asset back secured financings 2011-1. Term ABS 2012-1 [Member] Term Asset Backed Secured Financings Two Thousand Twelve One [Member] Term asset backed secured financings 2012-1. Term ABS 2012-2 [Member] Term Asset Backed Secured Financings Two Thousand Twelve Two [Member] Term Asset Backed Secured Financings Two Thousand Twelve Two [Member] Term ABS 2013-1 [Member] Term Asset Backed Secured Financings Two Thousand Thirteen One [Member] Term Asset Backed Secured Financings Two Thousand Thirteen One [Member] Term ABS 2013-2 [Member] TermAssetBackedSecuredfinancingsTwoThousandThirteenTwo [Member] TermAssetBackedSecuredfinancingsTwoThousandThirteenTwo [Member] Term ABS 2014-1 [Member] TermAssetBackedSecuredFinancingsTwoThousandFourteenOne [Member] TermAssetBackedSecuredFinancingsTwoThousandFourteenOne [Member] 2021 Senior Notes [Member] Two Thousand Twenty One Senior Notes [Member] Two Thousand Twenty One Senior Notes [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR [Member] London Interbank Offered Rate (LIBOR) [Member] Prime Rate [Member] Prime Rate [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Wholly-owned Subsidiary Debt Instrument, Issuer Line of credit maturity date Line of Credit Facility, Expiration Date Debt maturity date Debt Instrument, Maturity Date Financing Amount Line of Credit Facility, Maximum Borrowing Capacity Debt facility financing amount Debt Instrument, Face Amount Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Accounting Policies [Abstract] Net assumed written premiums Assumed Premiums Written Net premiums earned Amortization of capitalized acquisition costs Amortization of Acquisition Costs Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Restricted Cash and Cash Equivalents [Member] Restricted Cash And Cash Equivalents [Member] Restricted Cash And Cash Equivalents Number of reportable segments Number of Reportable Segments Uninsured cash and cash equivalents Cash, Uninsured Amount Number of portfolio segments Number of Portfolio Segments Number of Portfolio Segments Period after Consumer Loan assignment that Dealer Loans written off Period After Determination Dealer Loan Write Off Period After Determination Dealer Loan Write Off Period after month of purchase that Purchased Loans written off Period After Determination Purchased Loan Write Off Period After Determination Purchased Loan Write Off Commitments and Contingencies Disclosure [Abstract] Litigation and Contingent Liabilities Commitments and Contingencies Disclosure [Text Block] Document And Entity Information [Abstract] Document and Entity Information (Abstract) Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Increase to effective tax rate Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Affiliated Dealer Activity [Member] Affiliated Entity [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Affiliated Dealer Loan balances Due from Affiliates Percentage of Affiliated Dealer Loan balances Percentage Of Due From Affiliates Percentage Of Due From Affiliates Dealer Loan revenue Revenue from Related Parties Dealer Loan revenue, percentage Percentage Of Related Party Transaction Revenues From Transaction Percentage Of Related Party Transaction Revenues From Transaction New Consumer Loan assignments Advances To Dealers The cash outflow for non-recourse payments made to dealers under a portfolio program in exchange for the right to service the underlying consumer loans. New Consumer Loan assignments, percentage Percentage Of Advances To Dealers Percentage Of Advances To Dealers Accelerated Dealer Holdback payments Accelerated Payments of Dealer Holdback The cash outflow for payments made to dealers under our Portfolio Program at the time a pool of 100 or more consumer loans is closed by dealers with a single open pool or at the time 100 consumer loans have been collectively assigned by dealers with multiple open pools. Accelerated Dealer Holdback payments, percentage Percentage Of Accelerated Payments Of Dealer Holdback Percentage Of Accelerated Payments Of Dealer Holdback Dealer Holdback payments Payments of Dealer Holdback The cash outflow for payments made to dealers under our Portfolio Program from the portion of the collections on the underlying consumer loans that exceed amounts retained by us to recover the advance balance, certain collection costs, and our servicing fee. Dealer Holdback payments, percentage Percentage Of Payments Of Dealer Holdback Percentage Of Payments Of Dealer Holdback Trust Assets And Reinsurance Liabilities [Axis] Trust Assets And Reinsurance Liabilities [Axis] Trust Assets And Reinsurance Liabilities Axis Trust Assets And Reinsurance Liabilities[Domain] Trust Assets And Reinsurance Liabilities [Domain] Trust Assets And Reinsurance Liabilities Domain Trust Assets [Member] Trust Assets [Member] Trust Assets Member Unearned Premium [Member] Unearned Premium [Member] Unearned Premium Member Claims Reserve [Member] Claims Reserve [Member] Claims Reserve Member Restricted cash and cash equivalents Restricted Cash and Cash Equivalents Restricted securities available for sale Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities Earnings Per Share [Abstract] Statement [Table] Statement [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Stock Options, Restricted Stock Or Restricted Stock Units [Member] Stock Options Restricted Stock Or Restricted Stock Units [Member] Stock Options, Restricted Stock Or Restricted Stock Units [Member] Statement [Line Items] Statement [Line Items] Common shares Weighted Average Number of Shares Issued, Basic Vested restricted stock units Weighted Average Number of Shares, Restricted Stock Basic number of weighted average shares outstanding Dilutive effect of stock options Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Dilutive effect of restricted stock and restricted stock units Dilutive Securities Restricted Stock And Restricted Stock Units Dilutive securities restricted stock and restricted stock units. Dilutive number of weighted average shares outstanding Shares outstanding excluded from calculation of diluted net income per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of Restricted Cash and Cash Equivalents [Table] Schedule of Restricted Cash and Cash Equivalents [Table] Restricted Cash and Cash Equivalents [Axis] Restricted Cash and Cash Equivalents [Axis] US Government and Agency Securities [Member] US Government Corporations and Agencies Securities [Member] Corporate Bonds [Member] Corporate Bonds [Member] Corporate Bonds Member Commercial Paper [Member] Commercial Paper [Member] Certificates of Deposit [Member] Certificates of Deposit [Member] Restricted Cash and Cash Equivalents Items [Line Items] Restricted Cash and Cash Equivalents Items [Line Items] Estimated Fair Value, Less than 12 Months Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Gross Unrealized Losses, Less than 12 Months Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Estimated Fair Value, 12 Months or More Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Gross Unrealized Losses, 12 Months or More Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total Estimated Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Total Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Income Taxes Income Tax Disclosure [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] Restricted Stock [Member] Restricted Stock [Member] Restricted Stock Units [Member] Restricted Stock Units (RSUs) [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Stock-based compensation expense Share-based Compensation Schedule Of Debt Instruments [Table] Schedule Of Debt Instruments [Table] Schedule Of Debt Instruments [Table] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Term ABS Financings [Member] Asset-backed Securities [Member] Schedule of General Information of Financing Transaction Schedule of Debt [Table Text Block] Schedule of Additional Information Related to Debt Instruments Schedule Of Additional Information Related To Debt Instruments [Table Text Block] Schedule Of Additional Information Related To Debt Instruments [Table Text Block] Summary of Debt Schedule of Long-term Debt Instruments [Table Text Block] 2017 Senior Notes [Member] Two Thousand Seventeen Senior Notes [Member] Two Thousand Seventeen Senior Notes [Member] Balance outstanding Long-term Line of Credit Balance outstanding Secured Debt Balance outstanding Senior Notes, Noncurrent Amount available for borrowing Line of Credit Facility, Remaining Borrowing Capacity Amount available for borrowing Debt Instrument Amount Available For Borrowing Debt Instrument Amount Available For Borrowing Loans pledged as collateral Loans Pledged as Collateral Restricted cash and cash equivalents pledged as collateral Interest rate Line of Credit Facility, Interest Rate at Period End Interest rate Debt Instrument, Interest Rate at Period End Unamortized debt premium net Debt Instrument, Unamortized Premium Cost Restricted Available For Sale Securities Amortized Cost Restricted Available For Sale Securities Amortized Cost Gross Unrealized Gains Available For Sale Securities, Accumulated Gross Unrealized Gain, Before Tax Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Available For Sale Securities, Accumulated Gross Unrealized Loss, Before Tax Available For Sale Securities, Accumulated Gross Unrealized Loss, Before Tax Estimated Fair Value Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Close Date Debt financing close date Debt financing close date Net Book Value of Loans Contributed at Closing Net Book Value Of Loans Pledged As Collateral Net Book Value Of Loans Pledged As Collateral Maturity Date Statement of Comprehensive Income [Abstract] Unrealized gain (loss) on securities, tax effect Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Age of Consumer Loans contractual payments due with no forecasted future net cash flows Period After Consumer Loans With No Forecasted Future Net Cash Flows Period After Consumer Loans With No Forecasted Future Net Cash Flows Increase in provision for credit losses Allowance for Loan and Lease Losses, Period Increase (Decrease) Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract] Unrealized gain (loss) on securities, net of tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Allowance for credit losses Schedule of Reconciliation of the U.S. Federal Statutory Rate to Effective Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Related Party Loan Activity Schedule of Related Party Transactions [Table Text Block] Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Balance, beginning of period Write-offs Allowance for Loan and Lease Losses, Write-offs Recoveries Allowance for Loan and Lease Loss, Recovery of Bad Debts Balance, end of period Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative [Table] Derivative [Table] Warehouse Facility IV Member Starting March 2014 [Member] Warehouse Facility IV Member Starting March 2014 [Member] Warehouse Facility IV Member Starting March 2014 [Member] Derivative Instrument Risk [Axis] Derivative Instrument [Axis] Derivative Contract Type [Domain] Derivative Contract [Domain] 5.50% Cap Interest Rate [Member] Five Point Five Percent Cap Interest Rate [Member] 5.5% Cap Interest Rate [Member] 5.00% Cap Interest Rate [Member] Five Percent Cap Interest Rate [Member] 5% Cap Interest Rate [Member] Derivative [Line Items] Derivative [Line Items] Debt facility financing amount Start Interest Rate Contracts Inception Date Interest Rate Contracts Inception Date End Interest Rate Contracts Maturity Date Interest Rate Contracts Maturity Date Notional Derivative, Notional Amount Cap Interest Rate Derivative, Cap Interest Rate Interest rate caps, fair value of less than $0.1 million Derivative Asset, Fair Value, Amount Not Offset Against Collateral Summary of Reinsurance Activity Schedule Of Reinsurance Activity [Table Text Block] The tabular disclosure pertaining to the existence, magnitude and information about insurance that has been ceded to or assumed from another insurance company, including the methodologies and assumptions used in determining recorded amounts. Schedule of Trust Assets and Reinsurance Liabilities Schedule Of Trust Assets And Reinsurance Liabilities [Table Text Block] Schedule Of Trust Assets And Reinsurance Liabilities Table Text Block Related Party Transactions Related Party Transactions Disclosure [Text Block] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Statement of Financial Position [Abstract] Loans receivable, from affiliates Preferred stock, par value (in usd per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Common stock, par value (in usd per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Schedule of Restricted Securities Available for Sale Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Schedule of Restricted Securities Available for Sale by Aging Category Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block] Schedule of Cost and Estimated Fair Values of Debt Securities by Contractual Maturity Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of Stock Repurchases Class of Treasury Stock [Table Text Block] Schedule of Weighted Average Shares Outstanding Basic and Diluted Schedule of Weighted Average Number of Shares [Table Text Block] Schedule of Stock Based Compensation Expense Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] Summary of Restricted Stock Units Activity Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] Loans and Leases Receivable, Net [Roll Forward] Loans and Leases Receivable, Net [Roll Forward] Loans and Leases Receivable, Net [Roll Forward] Balance, beginning of period New Consumer Loan assignments New Consumer Loan Assignments New consumer loan assignments Principal collected on Loans receivable Proceeds from Collection of Loans Receivable Accelerated Dealer Holdback payments Transfers Loans And Leases Receivable Transfers Loans and leases receivable transfers. Write-offs Net change in other loans Proceeds from Collection of Other Receivables Balance, end of period Statement of Cash Flows [Abstract] Cash Flows From Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Provision for credit losses Depreciation Depreciation Amortization Amortization of Financing Costs and Discounts Loss on retirement of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Provision (benefit) for deferred income taxes Deferred Income Tax Expense (Benefit) Stock-based compensation Change in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] (Decrease) increase in accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities (Increase) decrease in income taxes receivable Increase (Decrease) in Income Taxes Receivable Decrease in income taxes payable Increase (Decrease) in Income Taxes Payable Decrease in other assets Increase (Decrease) in Other Operating Assets Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash Flows From Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Increase in restricted cash and cash equivalents Increase (Decrease) in Restricted Cash Purchases of restricted securities available for sale Payments to Acquire Available-for-sale Securities Proceeds from sale of restricted securities available for sale Proceeds from Sale and Maturity of Available-for-sale Securities Maturities of restricted securities available for sale Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Principal collected on Loans receivable Advances to Dealers Purchases of Consumer Loans Payments to Acquire Loans Receivable Accelerated payments of Dealer Holdback Payments of Dealer Holdback Net increase in other loans Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Net cash 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] Borrowings under revolving secured line of credit Proceeds from Long-term Lines of Credit Repayments under revolving secured line of credit Repayments of Long-term Lines of Credit Proceeds from secured financing Proceeds from Issuance of Secured Debt Repayments of secured financing Repayments of Secured Debt Proceeds from issuance of senior notes Proceeds from Issuance of Senior Long-term Debt Repayment of senior notes Repayments of Senior Debt Principal payments under mortgage note Repayments of Other Debt Payments of debt issuance and debt extinguishment costs Payments of Debt Issuance Costs Repurchase of common stock Payments for Repurchase of Common Stock Proceeds from stock options exercised Proceeds from Stock Options Exercised Tax benefits from stock-based compensation plans Excess Tax Benefit from Share-based Compensation, Financing Activities Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents, beginning of period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of period Supplemental Disclosure of Cash Flow Information: Supplemental Cash Flow Information [Abstract] Cash paid during the period for interest Interest Paid, Net Cash paid during the period for income taxes Income Taxes Paid, Net Business Segment Information Segment Reporting, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Restricted Cash and Cash Equivalents Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Loans Receivable and Allowance for Credit Losses Policy Loans Receivable, Policy [Policy Text Block] Reinsurance Reinsurance Accounting Policy [Policy Text Block] New Accounting Updates New Accounting Pronouncements, Policy [Policy Text Block] Stock-Based Compensation Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Subsequent Events [Abstract] SUBSEQUENT EVENTS Subsequent Events [Text Block] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Mortgages [Member] Mortgages [Member] Senior Notes [Member] Senior Notes [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Restricted cash and cash equivalents Restricted Cash And Cash Equivalents, Fair Value Disclosure Restricted Cash And Cash Equivalents, Fair Value Disclosure Net investment in Loans receivable Loans Receivable, Fair Value Disclosure Revolving secured line of credit Lines of Credit, Fair Value Disclosure Secured financing Secured Financing Fair Value Disclosure Secured Financing Fair Value Disclosure Notes Notes Payable, Fair Value Disclosure Warehouse Facilities [Member] Warehouse Facilities [Member] Warehouse facilities member. Line of credit facility Line of credit maturity date Percentage of net book value of loans Percentage Of Net Book Value Of Loans Percentage of net book value of loans, maximum. Maximum hedging reserve Maximum Hedging Reserve Maximum hedging reserve Number of warehouse facilities Number Warehouse Facilities Number Warehouse Facilities Percentage of collections on contributed loans Percentage of collections on contributed loans Percentage of collections on contributed loans Monthly servicing fee per financing Monthly Servicing Fee Per Financing Monthly Servicing Fee Per Financing Debt financing close date Close date, secured financings Debt Instrument, Issuance Date Senior notes stated interest rate Debt Instrument, Interest Rate, Stated Percentage Repayment of senior notes Redemption price, percentage of principal amount redeemed Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Repayments of other debt Debt covenants Debt Instrument Covenant Net Income For Past Two Quarters Debt Instrument Covenant Net Income For Past Two Quarters Number of dealers alleging damages Loss Contingency, Number of Plaintiffs Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Maximum outstanding balance Line of Credit Facility, Maximum Amount Outstanding During Period Average outstanding balance Line of Credit Facility, Average Outstanding Amount Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Carrying Amount [Member] Reported Value Measurement [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Assets Assets, Fair Value Disclosure [Abstract] Liabilities Liabilities, Fair Value Disclosure [Abstract] Schedule of Terms of Interest Rate Cap Agreements Schedule of Interest Rate Derivatives [Table Text Block] ASSETS: Assets [Abstract] Cash and cash equivalents Loans receivable (including $8.0 and $7.5 from affiliates as of June 30, 2014 and December 31, 2013, respectively) Property and equipment, net Property, Plant and Equipment, Net Income taxes receivable Income Taxes Receivable Other assets Other Assets Total Assets Assets LIABILITIES AND SHAREHOLDERS' EQUITY: Liabilities and Equity [Abstract] Liabilities: Liabilities [Abstract] Revolving secured line of credit Secured financing Mortgage note Other Borrowings Senior notes Deferred income taxes, net Deferred Tax Assets, Net Income taxes payable Accrued Income Taxes Total Liabilities Liabilities Commitments and Contingencies - See Note 14 Commitments and Contingencies Shareholders' Equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $.01 par value, 1,000,000 shares authorized, none issued Preferred Stock, Value, Issued Common stock, $.01 par value, 80,000,000 shares authorized, 21,593,828 and 22,943,078 shares issued and outstanding as of June 30, 2014 and December 31, 2013, respectively Common Stock, Value, Issued Paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total Shareholders' Equity Stockholders' Equity Attributable to Parent Total Liabilities and Shareholders' Equity Liabilities and Equity Schedule of Loans Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Summary of Changes in Loans Receivable Schedule Of Changes In Accounts Notes Loans And Financing Receivable [Table Text Block] Schedule Of Changes In Accounts Notes Loans And Financing Receivable [Table Text Block] Summary of Changes in Accretable Yield Summary Of Changes In Accretable Yield [Table Text Block] Summary of changes in the accretable yield. Summary of Information Related to New Consumer Loan Assignments Schedule Of New Consumer Loan Assignments [Table Text Block] Schedule of new consumer loan assignments. Schedule of Consumer Loans Forecasted Collection Percentage Schedule Of Consumer Loans Forecasted Collection Percentage [Text Block] Schedule Of Consumer Loans Forecasted Collection Percentage [Text Block] Schedule of Consumer Loans Performance Schedule Of Consumer Loans Performance [Table Text Block] Schedule Of Consumer Loans Performance [Table Text Block] Summary of Changes in Allowance for Credit Losses Schedule of Credit Losses Related to Financing Receivables, Current and Noncurrent [Table Text Block] Net Income Per Share Earnings Per Share [Text Block] Number of business programs Number Of Business Programs Number Of Business Programs Number of consumers required to group advances Number Of Consumers Required To Group Advances Number Of Consumers Required To Group Advances Number of consumer loans assigned to receive accelerated Dealer Holdback payment Number Of Consumer Loans Assigned To Receive Accelerated Dealer Holdback Payment Number Of Consumer Loans Assigned To Receive Accelerated Dealer Holdback Payment Servicing fee percentage in collections Service Fee Income As Percentage Of Collections Service fee income as a percentage of collections. One-time enrollment fee in program Revenue From Enrollment And Registration Fees In Program Revenue From Enrollment And Registration Fees In Program Percentage of enrollment fee of first accelerated dealer holdback payment Percentage Of Revenue From Enrollment And Registration Fees In Program Percentage Of Revenue From Enrollment And Registration Fees In Program Restricted Securities Available for Sale Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Derivative and Hedging Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Fair Value of Financial Instruments Fair Value Disclosures [Text Block]