Document and Entity Information [Abstract] Entity Registrant Name Entity Central Index Key Trading Symbol Amendment Flag Current Fiscal Year End Date Document Type Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Entity Filer Category Entity Common Stock, Shares Outstanding Consolidated Balance Sheets [Abstract] Assets [Abstract] ASSETS Assets, Current [Abstract] Current Assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Marketable Securities, Restricted, Current Restricted cash and marketable securities Investment in marketable securities Other Inventory, Supplies, Gross Marine operating supplies Inventory, Net Inventories Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Total prepaid expenses Assets, Current, Total Total current assets Total current assets Property, Plant and Equipment, Net Property and equipment, net Property and equipment Supplies value to property and equipment, net Property and equipment, net Goodwill Goodwill Intangible Assets, Net (Excluding Goodwill) Intangible assets, net of amortization Intangibles, net Other Assets, Noncurrent Other long-term assets Assets Assets Total assets Liabilities and Equity [Abstract] LIABILITIES LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities, Current [Abstract] Current Liabilities: Deferred Air Traffic Revenue, Current Unearned passenger revenues Accounts Payable and Accrued Liabilities, Current Accrued interest including tax Accounts payable and accrued expenses Balance outstanding Total accounts payable and accrued expenses Long-term Debt, Current Maturities Long-term debt - current Balance, net of discount, less current portion Balance, net of discount, less current portion Liabilities, Current, Total Total current liabilities Total current liabilities Long-term Debt, Excluding Current Maturities Long-term debt, less current portion Balance, net of discount, Total long-term debt, non-current Deferred Tax Liabilities, Net, Noncurrent Deferred tax liabilties Liabilities, Other than Long-term Debt, Noncurrent Other long-term liabilities Liabilities Estimated liability Total liabilities Commitments and Contingencies COMMITMENTS AND CONTINGENCIES Redeemable Noncontrolling Interest, Equity, Carrying Amount REDEEMABLE NONCONTROLLING INTEREST Stockholders' Equity Attributable to Parent [Abstract] STOCKHOLDERS' EQUITY Preferred Stock, Value, Issued Preferred stock, $0.0001 par value, 1,000,000 shares authorized; no shares issued and outstanding Common Stock, Value, Issued Common stock, $0.0001 par value, 200,000,000 shares authorized; 45,767,643 and 45,427,030 issued, 45,357,640 and 44,787,608 outstanding as of March 31, 2018 and December 31, 2017, respectively Common stock, $0.0001 par value, 200,000,000 shares authorized; 25,000,000 shares issued and outstanding (1) Additional Paid in Capital, Total Additional paid-in capital Retained Earnings (Accumulated Deficit) Retained earnings Stockholders' Equity Attributable to Parent Total stockholders' equity Total stockholders' equity Balance Balance Liabilities and Equity, Total Total liabilities and stockholders' equity Total liabilities, stockholders' equity and redeemable noncontrolling interest Preferred Stock, Par or Stated Value Per Share Preferred stock, par value Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Issued Preferred stock, shares issued Preferred Stock, Shares Outstanding Preferred stock, shares outstanding Common Stock, Par or Stated Value Per Share Common stock, par value Common stock, par value Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Income Statement [Abstract] Revenue, Net Tour revenues Tour revenues Cost of Revenue Cost of tours Cost of revenue Cost of tours Gross Profit Operating income (loss) Tour revenues Gross profit Gross profit Gross profit Operating Expenses [Abstract] Operating expenses: General and Administrative Expense General and administrative Selling and Marketing Expense Selling and marketing Selling and marketing expense Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Operating Expenses Total operating expenses Total operating expenses Operating Income (Loss) Operating (loss) income Operating income Operating income: Nonoperating Income (Expense) [Abstract] Other (expense) income: Interest Income (Expense), Net Interest expense, net Foreign Currency Transaction Gain (Loss), before Tax (Loss) gain on foreign currency (Gain) loss on currency translation (Gain) loss on currency translation (Gain) loss on currency translation Other Nonoperating Income (Expense) Other income (expense) Nonoperating Income (Expense) Total other expense Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income (loss) before income taxes Total Income Tax Expense (Benefit) Income tax expense (benefit) Income tax expense Income tax expense (benefit) Income tax benefit Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) Net income Net income Net income (loss) Net Income (Loss) Attributable to Noncontrolling Interest Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Parent Net (loss) income available to common stockholders Net (loss) income available to common stockholders Net income available to common stockholders Net income Net income Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Weighted average shares outstanding Weighted average shares outstanding: Weighted Average Number of Shares Outstanding, Basic Total weighted average shares outstanding, basic Total weighted average shares outstanding, basic Total weighted average shares outstanding, basic Basic Weighted Average Number of Shares Outstanding, Diluted Diluted Total weighted average shares outstanding, diluted Earnings Per Share [Abstract] Net (loss) income per share available to Lindblad Net income per share available to common stockholders Net income per share available to Lindblad Earnings Per Share, Basic Basic Earnings Per Share, Diluted Diluted Diluted earnings (loss) per share Diluted earnings (loss) per share Statement of Stockholders' Equity [Abstract] Statement [Table] Equity Components [Axis] Equity Component [Domain] Common Stock [Member] Common Stock [Member] Common Stock Additional Paid-in Capital [Member] Additional Paid-In Capital Retained Earnings [Member] Retained Earnings Statement [Line Items] Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total stockholders' equity Balance Balance Shares, Outstanding Balance, shares Balance, shares Stock Issued During Period, Value, Share-based Compensation, Gross Issuance of stock for equity compensation plans Stock-based compensation Stock Issued During Period, Shares, Share-based Compensation, Gross Stock-based compensation, shares Issuance of stock for equity compensation plans, Shares Stock Issued During Period, Value, New Issues Issuance of stock for equity compensation plans, net Stock Issued During Period, Shares, New Issues Issuance of stock for equity compensation plans net, shares Stock Issued During Period, Shares, New Issues Stock Repurchase Of Warrant During Period Value Repurchase of shares and warrants Repurchase of warrant during the period value. Stock Repurchase Of Warrant During Period Shares Repurchase of shares and warrants, shares Stock repurchase of warrant during period shares. Statement of Cash Flows [Abstract] Net Cash Provided by (Used in) Operating Activities [Abstract] Cash Flows From Operating Activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to reconcile net income to net cash provided by operating activities: Amortization of Acquisition Costs Amortization of National Geographic fee Amortization of Debt Issuance Costs and Discounts Deferred financing costs charged to interest expense Amortization of debt discount and deferred financing costs Amortization of debt discount, deferred financing and other, net Amortization of deferred financing costs and other, net Share-based Compensation Stock based compensation expense Stock-based compensation Total share compensation Total share compensation Deferred Income Tax Expense (Benefit) Deferred income taxes Total deferred Foreign Currency Transaction Gain Loss Foreign currency transaction gain loss. Loss (gain) on foreign currency Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities Changes in operating assets and liabilities Increase (Decrease) in Inventories and Other Operating Assets Inventories and Marine operating supplies Marine operating supplies and inventories Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other current assets Prepaid expenses and other current assets Increase Decrease In Unearned Passenger Revenues Unearned passenger revenues Unearned passenger revenues Amount of increase (decrease) unearned passenger revenues. Increase Decrease In Unamortized Issuance Costs Write-off of unamortized issuance costs related to debt refinancing Amount of increase (decrease) in unamortized issuance costs. Increase (Decrease) in Other Noncurrent Assets Other long-term assets Other long-term assets Increase (Decrease) in Other Noncurrent Liabilities Other long-term liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total Accounts payable and accrued expenses Accounts payable and accrued expenses Net Cash Provided by (Used in) Operating Activities, Total Net cash used in operating activities Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash Flows From Investing Activities Cash Flows From Investing Activities Payments to Acquire Property, Plant, and Equipment Purchase of property and equipment, net Purchases of property and equipment Payments To Acquire Restricted Cash And Marketable Securities Purchase of restricted cash and marketable securities Cash outflow for purchase of restricted cash and marketable securities. Transfer to restricted cash and marketable securities Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash Flows From Financing Activities Cash Flows From Financing Activities Proceeds from Issuance of Long-term Debt Proceeds from long-term debt Repayments of Long-term Debt Repayments of debt Repayments of long-term debt Repayments of long-term debt Payment Of Deferred Financing Costs Deferred financing costs The cash outflow for deferred financing costs. Payment of deferred financing costs Payments Related to Tax Withholding for Share-based Compensation Withholding taxes Repurchase under stock-based compensation plans and related tax impacts Repurchase under stock-based compensation plans and related tax impacts Repurchase under stock-based compensation plans and related tax impacts Payments For Repurchase Of Warrants And Common Shares Repurchase of warrants and common shares The aggregate amount paid by the entity to reacquire the right to purchase equity shares at a predetermined price, usually issued together with corporate debt. Repurchase of warrants and common stock Net Cash Provided by (Used in) Financing Activities, Total Net cash provided by financing activities Net cash provided by (used in) financing activities Net cash provided by (used in) financing activities Effect of Exchange Rate on Cash Effect of exchange rate changes on cash Effect of exchange rate changes on cash Cash and Cash Equivalents, Period Increase (Decrease), Total Net increase (decrease) in cash and cash equivalents Supplemental Cash Flow Information [Abstract] Supplemental disclosures of cash flow information: Cash Paid During Period [Abstract] Cash paid during the period: Cash paid during period. Interest Paid, Net Interest Income Taxes Paid Interest Income taxes Non-cash investing and financing activities: Non-cash investing and financing activities: Additional Paid In Capital Exercise Proceeds Of Option Shares Additional paid-in capital exercise proceeds of option shares The cash inflow from Additional paid-in capital exercise proceeds of option shares. Additional Paid In Capital Exchange Proceeds Used For Option Shares Additional paid-in capital exchange proceeds used for option shares The cash outflow from Additional paid-in capital exchange proceeds used for option shares. Business [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] BUSINESS Summary of Significant Accounting Policies [Abstract] Significant Accounting Policies [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Long-Term Debt [Abstract] Debt Disclosure [Text Block] LONG-TERM DEBT LETTERS OF CREDI Employee Benefit Plan [Abstract] Compensation and Employee Benefit Plans [Text Block] EMPLOYEE BENEFIT PLAN Stockholders' Equity [Abstract] Stockholders' Equity Note Disclosure [Text Block] STOCKHOLDERS' EQUITY Commitments and Contingencies [Abstract] Commitments and Contingencies Disclosure [Text Block] COMMITMENTS AND CONTINGENCIES Segment Information [Abstract] Segment Reporting Disclosure [Text Block] SEGMENT INFORMATION Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Consolidation, Policy [Policy Text Block] Principles of Consolidation Reclassification, Policy [Policy Text Block] Reclassifications Use of Estimates, Policy [Policy Text Block] Use of Estimates Revenue Recognition, Policy [Policy Text Block] Revenue Recognition Customer Deposits And Contract Liabilities [Policy Text Block] Customer Deposits and Contract Liabilities Disclosure of accounting policy for customer deposits and contract liabilities. Earnings Per Share, Policy [Policy Text Block] Earnings per Common Share Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Concentration Risk, Credit Risk, Policy [Policy Text Block] Concentration of Credit Risk Restricted Cash And Marketable Securities [Policy Text Block] Restricted Cash and Marketable Securities Disclosure of accounting policy for restricted cash and marketable securities. Inventory Supplies, Policy [Policy Text Block] Inventories and Marine Operating Supplies Marine Operating Supplies and Inventories Prepaid Expenses And Other Current Assets [Policy Text Block] Prepaid Expenses and Other Current Assets Disclosure of accounting policy for the prepaid expenses and other current assets. Property, Plant and Equipment, Policy [Policy Text Block] Property and Equipment Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Intangibles, net Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block] Long-Lived Assets Trade and Other Accounts Receivable, Policy [Policy Text Block] Accounts Payable and Accrued Expenses Fair Value Measurement, Policy [Policy Text Block] Fair Value Measurements and Disclosure Income Tax, Policy [Policy Text Block] Income Taxes Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Stock-Based Compensation Segment Reporting, Policy [Policy Text Block] Segment Reporting New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncements Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of calculated earnings per share Restricted Cash And Marketable Securities [Table Text Block] Schedule of restricted cash and marketable securities Tabular disclosure of marketable securities.This may consist of investments in certain debt and equity securities.The provisions of any restrictions are described in a note to the financial statements. Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Summary of prepaid expenses and other current assets Schedule Of Estimated Useful Lives [Table Text Block] Schedule of straight line method over the estimated useful lives of the assets Tabular disclosure of straight line method over the estimated useful lives of the assets. Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Summary of accounts payable and accrued expenses Schedule of Long-term Debt Instruments [Table Text Block] Schedule of long-term debt instruments Schedule of Maturities of Long-term Debt [Table Text Block] Schedule of future minimum principal payments Schedule of Segment Reporting Information, by Segment [Table Text Block] Summary of operating results for the business segments Weighted Average Number Of Shares Outstanding Basic 1 Total weighted average shares outstanding, basic Total Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Weighted Average Number Diluted Shares Outstanding Adjustment Dilutive potential common shares Dilutive potential common shares Weighted Average Number Of Shares Outstanding Diluted1 Total weighted average shares outstanding, diluted Total weighted average shares outstanding, diluted The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Schedule of Significant Accounting Policies [Table] Schedule of significant accounting policies. Industry of Counterparty, Type [Axis] Industry of Counterparty [Domain] Credit Card Intermediary [Member] Credit card processor reserves [Member] Securities Financing Transaction [Axis] Securities Financing Transaction [Domain] Federal Maritime Commission escrow [Member] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Certificates of Deposit [Member] Certificates of deposit and other restricted securities [Member] Summary of Significant Accounting Policies [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Restricted Cash and Investments, Current [Abstract] Restricted cash and marketable securities: Restricted Cash and Investments, Current Total restricted cash and marketable securities Prepaid Tour Expenses Prepaid tour expenses Amount of asset related to consideration paid in advance for tour expenses that provides economic benefits within a future period of one year or the normal operating cycle, if longer. Prepaid Air Expense Prepaid air expense Amount of asset related to consideration paid in advance for air expense that provides economic benefits within a future period of one year or the normal operating cycle, if longer. Prepaid Client Insurance Prepaid client insurance Amount of asset related to consideration paid in advance for client insurance that provides economic benefits within a future period of one year or the normal operating cycle, if longer. Other Prepaid Expense, Current Prepaid marketing, commissions and other expenses Prepaid Corporate Insurance Prepaid corporate insurance Amount of asset related to consideration paid in advance for corporate insurance that provides economic benefits within a future period of one year or the normal operating cycle, if longer. Prepaid Port Agent Fees Prepaid port agent fees Amount of asset related to consideration paid in advance for port agent fees that provides economic benefits within a future period of one year or the normal operating cycle, if longer. Prepaid Taxes Prepaid income taxes Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Vessels And Vessel Improvements [Member] Vessels and vessel improvements [Member] Furniture and Fixtures [Member] Furniture and equipment [Member] Computer Hardware And Software [Member] Computer hardware and software [Member] Computer Hardware and Software [Member] Leasehold Improvements [Member] Leasehold improvements [Member] Leasehold improvements, including port facilities [Member] Range [Axis] Range [Domain] Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Useful Life Property and equipment, estimated useful life Property, Plant and Equipment, Estimated Useful Lives Leasehold improvements, including port facilities Other Accrued Liabilities, Current Accrued other expense Accounts Payable, Current Accounts payable New Build Liability New build liability The amount of new build liability during the period. Accrued Employee Benefits, Current Employee liability Accrued Royalties, Current Royalty payable Taxes Payable, Current Income tax liabilities Accrued Bonuses, Current Bonus compensation liabilty Frequent Flier Liability, Current Travel certificate liability Customer Refund Liability, Current Refunds and commissions payable Accrued Insurance, Current Accrued travel insurance expense Summary of Significant Accounting Policies [Table] chedule that describes and identifies accounting policies. Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Trade Names [Member] Trade Names [Member] Tradenames [Member] Customer Lists [Member] Customer Lists [Member] Customer lists [Member] Warrant [Member] Warrant [Member] Award Type [Axis] Equity Award [Domain] Stock Compensation Plan [Member] 2015 Long-Term Incentive Plan [Member] Summary Of Significant Accounting Policies Textual [Abstract] Summary of Significant Accounting Policies (Textual) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Anti-dilutive excluded potential common shares Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Issuance of maximum shares of common stock approved by Board of directors and stockholders Maximum shares of common stock approved to employees, consultants and non-employee directors Issuance of common stock to Lindblad Expeditions National Geographic Joint Fund for Exploration and Conservation (LEX-NG Fund) Issuance of maximum shares of common stock approved by Board of directors and stockholders | shares Issuance of shares in Capitol to Lindblad Expeditions National Geographic Joint Fund for Exploration and Conservation (LEX-NG Fund) Share-based Compensation Arrangement by Share-based Payment Award, Shares Purchased for Award Options to purchase an aggregate shares of common stock Share-based Compensation Arrangement by Share-based Payment Award, Per Share Weighted Average Price of Shares Purchased Weighted average exercise price per share Share Price Fair value for exercise proceeds Option grants, Stock price Warrants to purchase common stock at price Investment Warrants Expiration Date Warrants expiration date Description Of Number Of Vessels Number of vessels, description Description of number of vessels. Foreign Financial Institutions, Actual Deposits Cash held in financial institutions Credit Card Deposits Credit card deposits The amount of credit card deposits. Unrecognized Tax Benefits Unrecognized tax benefits Beginning of year End of year Number of Operating Segments Number of operating segments Number of Reportable Segments Number of reportable segments Finite-Lived Intangible Asset, Useful Life Intangibles, estimated useful life Other Tax Expense (Benefit) Additional tax expense Contract Liabilities Contract liabilities The amount of contract liabilities. Revenue Related To Contract Liabilities Revenues related to our contract liabilities The amount of revenues related to our contract liabilities. Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Notes Payable, Other Payables [Member] Note payable [Member] Line of Credit [Member] Credit Facility [Member] Term loan [Member] Debt Instrument [Line Items] Total long-term debt Principal, Total long-term debt Total long-term debt Discount And Deferred Financing Costs Long Term Debt Discount and Deferred Financing Costs net, Total long-term debt Amount of discount and deferred financing costs long term debt. Debt Instrument, Unamortized Discount Balance, Total long-term debt Debt Instrument Face Amount Long Term Debt Current Principal, Less current portion Amount of debt instrument face amount long term debt current. Principal, Less current portion Discount And Deferred Financing Costs Long Term Debt Current Discount and Deferred Financing Costs net, less current portion Amount of discount and deferred financing costs long term debt current. Debt Instrument Face Amount Long Term Debt Non Current Principal, Total long-term debt, non-current Amount of debt instrument face amount long term debt non current. Discount And Deferred Financing Costs Long Term Debt Non Current Discount and Deferred Financing Costs net, Total long-term debt, non-current Amount of discount and deferred financing costs long term debt non current. Financial Instrument [Axis] Financial Instruments [Domain] Restated Credit Facility Agreement [Member] Restated Credit Facility [Member] Senior Secured Credit Agreement [Member] Credit Facility [Axis] Credit Facility [Domain] Revolving Credit Facility [Member] Revolving Facility [Member] Long Term Debt Textual [Abstract] Long-Term Debt (Textual) Line of Credit Facility, Maximum Borrowing Capacity Maximum borrowing capacity Maximum borrowing capacity Line of Credit Facility, Maximum Amount Outstanding During Period Outstanding principal amount Line of Credit Facility, Increase (Decrease), Net Increase in line of credit facility Increasing the facility Line of Credit Facility, Interest Rate Description Description of interest rate Line of Credit Facility, Expiration Date Credit facility, expiration date Revolving Credit Facility Debt Instrument, Maturity Date Letters of credit maturity date Debt maturity date Debt Instrument, Interest Rate During Period Promissory note interest rate Debt Instrument, Description Agreement description Credit agreement, description Long-term Line of Credit Revolving credit facility Employee Benefit Plan Textual [Abstract] Employee Benefit Plan (Textual) Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Percentage match of employee contributions Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount Annual maximum amount of company match per employee Defined Contribution Plan, Administrative Expenses Benefit plan contribution recorded with general and administrative expenses Schedule of Stock by Class [Table] Title of Individual [Axis] Relationship to Entity [Domain] Board of Directors Chairman [Member] Board of Directors [Member] Employee Stock Option [Member] Stock and Warrant Repurchase Plan [Member] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Class of Stock [Line Items] Stockholders Equity Textual [Abstract] Stockholders' Equity (Textual) Stock And Warrant Repurchase Value Increased Stock and warrant repurchase value increased Stock and warrant repurchase value increased. Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Shares granted Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price Grant price Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Percentage of level ranging Share-based Compensation Arrangement by Share-based Payment Award, Description Share based payment award, description Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Stock options exercised Investment Options, Exercise Price Stock options exercise price Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Future minimum payments on its charter agreements Operating Leases, Future Minimum Payments Due, Next Twelve Months 2018 (nine months) Operating Leases, Future Minimum Payments, Due in Two Years 2019 Operating Leases, Future Minimum Payments, Due in Three Years 2020 Operating Leases, Future Minimum Payments Due Total Total Schedule of Related Party Transactions, by Related Party [Table] Related Party [Axis] Related Party [Domain] National Geographic Society [Member] National Geographic Society [Member] National Geographic [Member] World Wildlife Fund [Member] World Wildlife Fund [Member] World Wildlife Fund [Member]. National Geographic Islander [Member] National Geographic Islander [Member] United States Tour Operators Association [Member] United States Tour Operators Association [Member] Ulstein Verft [Member] Nichols Brothers Boat Builders [Member] Nichols Brothers Boat Builders [Member] Nichols brothers boat builders. Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Royalty Agreements [Member] Royalty Agreements [Member] Royalty Agreement [Member] Related Party Transaction [Line Items] Commitments And Contingencies Textual [Abstract] Commitments and Contingencies (Textual) Other Commitments, Description Vessel construction agreements, description Fleet Expansion And Contstruction Contract Damages Risk of loss or damage, description A description related to fleet expansion and contstruction contract damages. Royalty Expense Royalty expense Accounts Payable and Other Accrued Liabilities, Current Balance outstanding Land under Purchase Options, Recorded Cruise vessels at a purchase price Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Domain] Lindblad [Member] Lindblad [Member] Lindblad segment [Member] Natural Habitat [Member] Natural Habitat [Member] Segment Reporting Information [Line Items] Amount Of Change In Fiscal Year Sales Revenue Net Tour revenues, Change Amount of change in fiscal year sales revenue net. Percentage Change In Fiscal Year Sales Revenue Net Tour revenues, % Percentage change in Fiscal year sales revenue net. Amount Of Change In Fiscal Year Operating Income Loss Operating income, Change Amount of change in fiscal year operating income loss. Percentage Of Change In Fiscal Year Operating Income Loss Operating income, % Percentage of change in fiscal year operating income loss. Operating Rights [Member] Operating rights [Member] Operating Rights [Member]. Segment Information Textual [Abstract] Segment Information (Textual) Amortization of Intangible Assets Amortization of tradename Net carrying value for operating rights Amortization expense Goodwill, Gross Goodwill Intangible Assets, Current Intangibles, net Net carrying value for operating rights Capital Expenditure, Discontinued Operations Capital expenditures