Entity Central Index Key Weighted average number of Restricted Stick Units (RSUs) without service conditions. Document and entity information. Document And Entity Information [Abstract] Document Information [Table] Document Information [Table] Class of Stock Statement Class Of Stock [Axis] Class of Stock Class Of Stock [Domain] Class A Common Stock [Member] Common Class A [Member] Class B Common Stock [Member] Common Class B [Member] Document Information [Line Items] Document Information [Line Items] 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 Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Well Known Seasoned Issuer Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Amount of long-term debt, estimated or scheduled to be repaid within one year of the balance sheet date. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Current portion of the excess of the market value of vessel charters over contracted value of the charters at the date of merger. The intangible lease liability is amortized as an increase in time charter revenue over the remaining term of the relevant charter. Carrying amount of long-term debt, net of items such as unamortized discount, premium or deferred financing charges, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Non current portion of the excess of the market value of vessel charters over contracted value of the charters at the date of merger. The intangible lease liability is amortized as an increase in time charter revenue over the remaining term of the relevant charter. Statement Of Financial Position [Abstract] Statement [Table] Statement [Table] Series B Preferred Shares [Member] Series B Preferred Stock [Member] Statement [Line Items] Statement [Line Items] Assets Assets [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Accounts receivable Accounts Receivable Net Current Due from related party (note 9) Due From Related Parties Current Prepaid expenses Prepaid Expense Current Other receivables Other Receivables Net Current Inventory Inventory Gross Total current assets Assets Current Vessels in operation (note 4) Property Plant And Equipment Net Other fixed assets Property Plant And Equipment Other Net Intangible assets (note 5) Capitalized Computer Software Net Other long term assets (note 7) Other Assets Noncurrent Total non-current assets Assets Noncurrent Total Assets Assets Liabilities and Stockholders’ Equity Liabilities And Stockholders Equity [Abstract] Liabilities Liabilities [Abstract] Current portion of long-term debt (note 7) Long Term Debt Current Repayment Intangible liability – charter agreements (note 6) Intangible Liability Charter Agreements Current Deferred revenue Deferred Revenue Current Accounts payable Accounts Payable Current Due to related party (note 9) Due To Related Parties Current Accrued expenses Accrued Liabilities Current Total current liabilities Liabilities Current Long-term debt (note 7) Long Term Debt Noncurrent Net Of Discount Deferred Financing Charges Or Premium Intangible liability – charter agreements (note 6) Intangible Liability Charter Agreements Noncurrent Deferred tax liability Deferred Tax Liabilities Noncurrent Total long-term liabilities Liabilities Noncurrent Total Liabilities Liabilities Commitments and contingencies (note 10) Commitments And Contingencies Stockholders’ Equity Stockholders Equity [Abstract] Common stock Common Stock Value Outstanding Preferred stock Preferred Stock Value Outstanding Additional paid in capital Additional Paid In Capital Accumulated deficit Retained Earnings Accumulated Deficit Total Stockholders’ Equity Stockholders Equity Total Liabilities and Stockholders’ Equity Liabilities And Stockholders Equity Common stock, shares authorized Common Stock Shares Authorized Common stock, par value Common Stock Par Or Stated Value Per Share Common stock, shares issued Common Stock Shares Issued Common stock, shares outstanding Common Stock Shares Outstanding Preferred stock, shares authorized Preferred Stock Shares Authorized Preferred stock, par value Preferred Stock Par Or Stated Value Per Share Preferred stock, shares issued Preferred Stock Shares Issued Preferred stock, outstanding Preferred Stock Shares Outstanding The aggregate amount of time charter revenue from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. The aggregate vessel operating expenses incurred during the reporting period. Vessel operating expenses from transactions with related party. Number of basic shares or units, including adjustment for contingently issuable units and 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. Income Statement [Abstract] Operating Revenues Revenues [Abstract] Time charter revenue Sales Revenue Net Time charter revenue – related party (note 9) Time Charter Revenue From Related Party Total operating revenues Revenues Operating Expenses Costs And Expenses [Abstract] Vessel operating expenses Vessel Operating Expenses Vessel operating expenses – related party (note 9) Vessel Operating Expenses From Transactions With Related Party Depreciation Depreciation Depletion And Amortization Impairment of vessels (note 4) Tangible Asset Impairment Charges General and administrative General And Administrative Expense Other operating income (note 8) Other Operating Income Total operating expenses Costs And Expenses Operating (Loss) Income Operating Income Loss Non Operating Income (Expense) Nonoperating Income Expense [Abstract] Interest income Interest Income Deposits With Financial Institutions Interest expense Interest Expense Loss before Income Taxes Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income taxes Income Tax Expense Benefit Net Loss Net Income Loss Earnings allocated to Series B Preferred Shares (note 11) Preferred Stock Dividends Income Statement Impact Net Loss available to Common Shareholders Net Income Loss Available To Common Stockholders Basic Weighted average number of common shares outstanding Weighted Average Number Of Shares Outstanding [Abstract] Basic (including RSU’s without service conditions) (note 14) Weighted Average Number Of Shares Outstanding Basic Including Restricted Stock Units Without Service Conditions Diluted (note 14) Weighted Average Number Of Diluted Shares Outstanding Net loss per common share Earnings Per Share [Abstract] Basic (including RSU’s without service conditions) (note 14) Earnings Per Share Basic Diluted (note 14) Earnings Per Share Diluted Weighted average number of Class B common shares outstanding Basic and diluted (note 14) Weighted Average Number Of Share Outstanding Basic And Diluted Net (loss) income per Class B common share Basic and diluted (note 14) Earnings Per Share Basic And Diluted The amount of intangible lease liability amortized as an increase in time charter revenue during the reporting period. Reduction in proceeds and proceeds from sale of property plant and equipment. The cash outflow for capitalized costs relating to drydocking. Proceeds from debt net of original discount and before costs related to issuance. Statement Of Cash Flows [Abstract] Debt Instrument Debt Instrument [Axis] Debt Instrument, Name Debt Instrument Name [Domain] Ten point zero percent first priority secured notes due 2019 and Nine point eight seven five percent first priority secured notes due 2022. 10.0 % First Priority Secured Notes Due 2019 and 9.875 % First Priority Secured Notes Due 2022 [Member] Ten Point Zero Percent First Priority Secured Notes Due2019 And Nine Point Eight Seven Five Percent First Priority Secured Notes Due2022 [Member] Nine point eight seven five percent first priority secured notes due 2022. 9.875 % First Priority Secured Notes Due 2022 [Member] Nine Point Eight Seven Five Percent First Priority Secured Notes Due2022 [Member] Ten Point Zero Percent First Priority Secured Notes Due 2019 [Member] 10.0 % First Priority Secured Notes Due 2019 [Member] Ten Point Zero Percent First Priority Secured Notes Due2019 [Member] Cash Flows from Operating Activities Net Cash Provided By Used In Operating Activities [Abstract] Net loss Adjustments to Reconcile Net Loss to Net Cash Provided by Operating Activities Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Vessel impairment (note 4) Gain on sale of vessels (note 4) Gain Loss On Sale Of Property Plant Equipment Gain on repurchase of secured notes (note 7) Gain Loss On Repurchase Of Debt Instrument Amortization of deferred financing costs (note 7) Amortization Of Financing Costs Amortization of original issue discount (note 7) Amortization Of Debt Discount Premium Amortization of intangible liability Amortization Of Intangible Liabilities Share based compensation (note 12) Share Based Compensation (Increase) decrease in accounts receivable and other assets Increase Decrease In Accounts Receivable And Other Operating Assets (Increase) decrease in inventory Increase Decrease In Inventories (Decrease) increase in accounts payable and other liabilities Increase Decrease In Accounts Payable And Other Operating Liabilities Increase (decrease) in related party balances Increase Decrease In Due To Related Parties Increase in unearned revenue Increase Decrease In Deferred Revenue Unrealized foreign exchange loss (gain) Foreign Currency Transaction Gain Loss Unrealized Net Cash Provided by Operating Activities Net Cash Provided By Used In Operating Activities Continuing Operations Cash Flows from Investing Activities Net Cash Provided By Used In Investing Activities [Abstract] Cash paid for vessels (note 4) Payments To Acquire Productive Assets Net proceeds from sale of vessels (note 4) Reduction In Proceeds And Proceeds From Sale Of Property Plant And Equipment Cash paid for vessel improvements Payments For Capital Improvements Cash paid for other assets Payments To Acquire Other Property Plant And Equipment Cash paid for drydockings Capitalized Costs Relating To Dry Docking Net Cash Used in Investing Activities Net Cash Provided By Used In Investing Activities Continuing Operations Cash Flows from Financing Activities Net Cash Provided By Used In Financing Activities [Abstract] Proceeds from issuance of secured notes (note 7) Proceeds From Debt Net Of Original Discount And Before Costs Related To Issuance Repurchase of secured notes (note 7) Repayments Of Secured Debt Proceeds from drawdown of credit facilities (note 7) Proceeds From Lines Of Credit Repayment of credit facilities (note 7) Repayments Of Lines Of Credit Deferred financing costs incurred (note 7) Payments Of Financing Costs Class A common shares – dividends paid (note 11) Payments Of Dividends Common Stock Series B Preferred Shares – dividends paid (note 11) Payments Of Dividends Preferred Stock And Preference Stock Net Cash (Used in) Provided by Financing Activities Net Cash Provided By Used In Financing Activities Continuing Operations Net Increase in Cash and Cash Equivalents Cash And Cash Equivalents Period Increase Decrease Cash and Cash Equivalents at Start of Year Cash and Cash Equivalents at End of Year Supplemental Information Supplemental Cash Flow Information [Abstract] Total interest paid Interest Paid Total income tax paid Income Taxes Paid Statement Of Partners Capital [Abstract] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock [Member] Common Stock [Member] Preferred Stock [Member] Preferred Stock [Member] Additional Paid-in Capital [Member] Additional Paid In Capital [Member] Retained Earnings/ (Accumulated Deficit) [Member] Retained Earnings [Member] Balance Balance, shares Shares Outstanding Restricted Stock Units (note 12) Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition Shares issued (notes 11, 12) Stock Issued During Period Value New Issues Class A common shares issued (notes 11, 12) Stock Issued During Period Shares New Issues Net loss for the year Dividends on Class A common shares (note 11) Dividends Common Stock Series B Preferred Shares dividend (note 11) Dividends Preferred Stock Balance Balance, shares General [Text Block] Organization Consolidation And Presentation Of Financial Statements [Abstract] General General [Text Block] Nature of Operations and Basis of Preparation Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Accounting Policies [Abstract] Significant Accounting Policies Significant Accounting Policies [Text Block] Property Plant And Equipment [Abstract] Vessels in Operation, less Accumulated Depreciation Property Plant And Equipment Disclosure [Text Block] Goodwill And Intangible Assets Disclosure [Abstract] Intangible Assets Intangible Assets Disclosure [Text Block] Disclosure on Intangible Liabilities relating to Charter Agreements. Text Block [Abstract] Intangible Liability - Charter Agreements Intangible Liability Charter Agreements [Text Block] Debt Disclosure [Abstract] Long Term Debt Long Term Debt [Text Block] Other Income And Expenses [Abstract] Other Operating Income Other Income And Other Expense Disclosure [Text Block] Related Party Transactions [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] Equity [Abstract] Share Capital Stockholders Equity Note Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Share-Based Compensation Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Risks And Uncertainties [Abstract] Risks Associated with Concentration Concentration Risk Disclosure [Text Block] Earnings per Share Earnings Per Share [Text Block] Subsequent Events [Abstract] Subsequent events Subsequent Events [Text Block] Basis of consolidation Consolidation Policy [Text Block] Use of estimates Use Of Estimates Cash and cash equivalents Cash And Cash Equivalents Policy [Text Block] Accounts receivable Trade And Other Accounts Receivable Policy Vessels Property Plant And Equipment Policy [Text Block] Drydocking Cost [Policy Text Block] Drydocking costs Drydocking Cost Policy [Text Block] Intangible Liabilities Charter Agreements [Policy Text Block] Intangible liabilities - charter agreements Intangible Liabilities Charter Agreements Policy [Text Block] Long-lived assets Property Plant And Equipment Impairment Deferred financing costs Deferred Charges Policy [Text Block] Preferred Shares Policy [Text Block] Preferred shares Preferred Shares Policy [Text Block] Classification of long term debt Debt Policy [Text Block] Other Comprehensive Income Loss Policy [Text Block] Other comprehensive income (loss) Other Comprehensive Income Loss Policy [Text Block] Revenue recognition and related operating expense Revenue Recognition Policy [Text Block] Foreign currency transactions Foreign Currency Transactions And Translations Policy [Text Block] Repairs and maintenance Maintenance Cost Policy Policy [Text Block] Insurance Policy [Text Block] Insurance Insurance Policy [Text Block] Share based compensation Share Based Compensation Option And Incentive Plans Policy Income taxes Income Tax Policy [Text Block] Inventories Inventory Policy [Text Block] Dividends Policy [Text Block] Dividends Dividends Policy [Text Block] Earnings per share Earnings Per Share Policy [Text Block] Recently issued accounting standards New Accounting Pronouncements Policy Policy [Text Block] Schedule of Vessels and Charters Table [Text Block] Schedule of Vessels Chartered Schedule Of Vessels And Charters Table [Text Block] Schedule of Vessels in Operation, Less Accumulated Depreciation Property Plant And Equipment [Text Block] Vessel net book value variations. Schedule of Variations in Net Book Value of Vessels, Including Drydocking Vessel Net Book Value Variations Table [Text Block] Schedule of Intangible Assets Schedule Of Finite Lived Intangible Assets Table [Text Block] Schedule of intangible liabilities charter agreements. Schedule of Intangible Liability Schedule Of Intangible Liabilities Charter Agreements Table [Text Block] Schedule of Long Term Debt Schedule Of Debt Instruments [Text Block] Schedule of Repayment of Long Term Debt, Notes and Super Senior Term Loan Schedule Of Maturities Of Long Term Debt Table [Text Block] Schedule Of Deferred Financing Costs [Table Text Block] Schedule of Deferred Financing Cost Schedule Of Deferred Financing Costs Table [Text Block] Schedule of Other Operating Income Expense [Table Text Block] Schedule of Other Operating Income Schedule Of Other Operating Income Expense Table [Text Block] Schedule Of Commitments And Contingencies Table [Text Block] Maximum Contracted Future Annual Charter Hire Receivable Before Allowance for Any Off-Hire Periods Schedule Of Commitments And Contingencies Table [Text Block] Summary of Issued Share Based Awards Schedule Of Share Based Compensation Restricted Stock Units Award Activity Table [Text Block] Earnings per Share Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Number of vessels owned. Approximate remaining charter term. Nature Of Operations And Basis Of Preparation [Line Items] Nature Of Operations And Basis Of Preparation [Table] Nature Of Operations And Basis Of Preparation [Table] Nature Of Operations And Basis Of Preparation [Table] Related Party Related Party Transactions By Related Party [Axis] Related Party Related Party [Domain] CMA CGM [Member] CMA CGM [Member] C M A C G M [Member] Legal Entity Legal Entity [Axis] Entity Entity [Domain] OOCL [Member] OOCL [Member] O O C L [Member] Range Range [Axis] Range Range [Member] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Nature Of Operations And Basis Of Preparation [Line Items] Nature Of Operations And Basis Of Preparation [Line Items] Number of vessels Number Of Vessels Owned Remaining charter terms Approximate Remaining Charter Term Capacity Of Vessels In Twenty Foot Equivalent Units Year Built Purchase Date Daily Charter Rate Nature Of Operations [Line Items] Nature Of Operations [Table] Nature Of Operations [Table] Nature Of Operations [Table] Property, Plant and Equipment, Type Property Plant And Equipment By Type [Axis] Property, Plant and Equipment, Type Property Plant And Equipment Type [Domain] CMA CGM Matisse [Member] CMA CGM Matisse [Member] C M A C G M Matisse [Member] CMA CGM Utrillo [Member] CMA CGM Utrillo [Member] C M A C G M Utrillo [Member] Delmas Keta [Member] Delmas Keta [Member] Delmas Keta [Member] Julie Delmas [Member] Julie Delmas [Member] Julie Delmas [Member] Kumasi [Member] Kumasi [Member] Kumasi [Member] Marie Delmas [Member] Marie Delmas [Member] Marie Delmas [Member] CMA CGM La Tour [Member] CMA CGM La Tour [Member] C M A C G M La Tour [Member] CMA CGM Manet [Member] CMA CGM Manet [Member] C M A C G M Manet [Member] CMA CGM Alcazar [Member] CMA CGM Alcazar [Member] Cma Cgm Alcazar [Member] CMA CGM Chateau Dlf [Member] CMA CGM Chateau d'lf [Member] Cma Cgm Chateau Dlf [Member] CMA CGM Thalassa [Member] CMA CGM Thalassa [Member] C M A C G M Thalassa [Member] CMA CGM Jamaica [Member] CMA CGM Jamaica [Member] C M A C G M Jamaica [Member] CMA CGM Sambhar [Member] CMA CGM Sambhar [Member] C M A C G M Sambhar [Member] CMA CGM America [Member] CMA CGM America [Member] C M A C G M America [Member] CMA CGM Berlioz [Member] CMA CGM Berlioz [Member] C M A C G M Berlioz [Member] GSL Tianjin [Member] GSL Tianjin [Member] G S L Tianjin [Member] OOCL Qingdao [Member] OOCL Qingdao [Member] O O C L Qingdao [Member] OOCL Ningbo [Member] OOCL Ningbo [Member] O O C L Ningbo [Member] Nature Of Operations [Line Items] Nature Of Operations [Line Items] Capacity in TEUs Capacity Of Vessels In Twenty Foot Equivalent Units Year Built Year Built Purchase Date by GSL Purchase Date Charter Remaining Duration (years) Daily Charter Rate Daily Charter Rate Option periods daily charter rate. Charter option periods. Vessel charter period. Charter effective date. General end of charter redelivery period. Charter, redelivery option period. Kumasi and Marie Delmas. Kumasi and Marie Delmas [Member] Kumasi And Marie Delmas [Member] Julie Delmas and Delmas Keta. Julie Delmas and Delmas Keta [Member] Julie Delmas And Delmas Keta [Member] Subsequent Event Type Subsequent Event Type [Axis] Subsequent Event Type Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Daily charter rate for option periods Option Periods Daily Charter Rate Charter Option Periods Charter Option Periods Vessel charter period Vessel Charter Period Charter effective date Charter Effective Date General end of charter redelivery period General End Of Charter Redelivery Period Redelivery option period Charter Redelivery Option Period Significant Accounting Policies [Line Items] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Geographical Statement Geographical [Axis] Geographical Segment Geographical [Domain] United Kingdom [Member] UNITED KINGDOM Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Allowances for doubtful accounts Allowance For Doubtful Accounts Receivable Current Number of intangible asset vessels to be purchased. Number of vessels yet to be purchased Number Of Intangible Asset Vessels To Be Purchased Capitalized interest Accumulated Capitalized Interest Costs Vessel estimated useful life Property Plant And Equipment Useful Life Period between scheduled drydockings Period between scheduled regulatory drydockings Period Between Scheduled Drydockings The period from the impairment test date in which, after the current charter expires, forecast rates are adopted and a reversion to the historical mean thereafter. Charter rates on expiry of existing charters, which are based on forecast charter rates, where relevant, for the four years from the date of the impairment test and a reversion to the historical mean for each vessel thereafter. Forecast Rate Period following charter expiry Period From Impairment Test Date In Which After Current Charter Expires Forecast Rates Adopted Future charter rate assumptions Future Charter Rate Assumptions Preferred shares dividend rate percentage Preferred Stock Dividend Rate Percentage Tonnage Tax Expense Included In Operating Expense Tonnage tax included within operating expenses Tonnage Tax Expense Included In Operating Expense Number Of Subsidiaries. Corporate Income Tax Rate Number of subsidiaries owned by the Company Number Of Subsidiaries Principal rate of corporate income tax Corporate Income Tax Rate Deferred tax liability recognized Cost Property Plant And Equipment Gross Accumulated Depreciation Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Vessel impairment during period Net book value Number of vessels impairment charge recognized. Schedule Of Property Plant And Equipment [Table] Schedule Of Property Plant And Equipment [Table] Ville D Aquarius [Member] Ville d' Aquarius [Member] Ville D Aquarius [Member] Ville D Orion [Member] Ville d' Orion [Member] Ville D Orion [Member] Property Plant And Equipment [Line Items] Property Plant And Equipment [Line Items] Number of vessels on which impairment charge is recognized Number Of Vessels Impairment Charge Recognized Vessel impairment charge Gain on sale of vessels Opening balance Additions in the period Property Plant And Equipment Additions Depreciation expense Cost Of Services Depreciation Vessel impairment Closing balance Number of vessels pledged as collateral under credit facilities. Number of vessels pledged as collateral under 2022 notes and secured term loan Number Of Vessels Pledged As Collateral Under Credit Facilities Software development Finite Lived Intangible Assets Net [Abstract] Opening balance Depreciation Capitalized Computer Software Amortization1 Closing balance Intangible Liability Charter Agreements, Net Of Accumulated Amortization Amortization of Intangible Assets Charter Agreements Intangible Liability Charter Agreements [Abstract] Intangible Liability Disclosure [Abstract] Intangible Liability Disclosure [Abstract] Intangible Liability Charter Agreements [Abstract] Intangible Liability Charter Agreements [Abstract] Opening balance Intangible Liability Charter Agreements Amortization in period Amortization Of Intangible Assets Charter Agreements Closing balance Number of vessels owned with finite lived intangible liability. Number of vessels contracted with finite lived intangible liability. Merger cash flow projections discount rate. Finite Lived Intangible Liabilities [Line Items] Schedule Of Finite Lived Intangible Liabilities [Table] Schedule Of Finite Lived Intangible Liabilities [Table] Schedule Of Finite Lived Intangible Liabilities [Table] Business Acquisition Business Acquisition [Axis] Business Acquisition, Acquiree Business Acquisition Acquiree [Domain] At Merger [Member] At Merger [Member] At Merger [Member] Finite Lived Intangible Liabilities [Line Items] Finite Lived Intangible Liabilities [Line Items] Discount rate of projected lease cash flow Merger Cash Flow Projections Discount Rate Number of vessels Number Of Vessels Owned With Finite Lived Intangible Liability Number of vessels Number Of Vessels Contracted With Finite Lived Intangible Liability The amount of debt discount recognized on date of issue. Carrying amount of long-term debt, net of unamortized discount or premium and deferred financing charges, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Debt Instrument [Table] Debt Instrument [Table] Two thousand twenty two and two thousand nineteen notes. 2022 Notes / 2019 Notes [Member] Two Thousand Twenty Two And Two Thousand Nineteen Notes [Member] Super senior term loan. Super Senior Term Loan [Member] Super Senior Term Loan [Member] Credit Facility Credit Facility [Axis] Credit Facility Credit Facility [Domain] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] 2019 Notes Debt Instrument Face Amount Less repurchase of Notes (note 7(a)) Debt Instrument Repurchased Face Amount Less original issue discount Debt Instrument Original Issue Discount Amortization of original issue discount Accumulated Amortization Deferred Finance Costs 2022 Notes / 2019 Notes (note 7(d) and (a)) Notes Payable Revolving Credit Facility (note 7(b)) Line Of Credit Secured Term Loan (note 7(c) and (e)) Secured Debt Less: Deferred financing costs (note 7(e)) Deferred Costs Current And Noncurrent Balance Debt Net Of Deferred Financing Charges And Original Issue Discount Less: Current portion of 2019 Notes (note 7(a)) Notes Payable Current Less: Current portion of Secured Term Loan (note 7 (c) and (e)) Secured Debt Current Non-current portion of Long-Term Debt Debt Instrument Maturity Year Debt instrument, maturity year Debt Instrument Maturity Year Debt instrument termination date. Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] Interest Expense [Member] Interest Expense [Member] Issuance of secured notes Issuance date of debt instrument Debt Instrument Issuance Date1 Debt instrument, interest rate Debt Instrument Interest Rate Stated Percentage Debt instrument, maturity date Debt Instrument Maturity Date Termination date of debt Debt Instrument Termination Date Repayments of secured debt Number of vessels secured to notes. Number of vessels secured to notes Number Of Vessels Secured To Notes Interest on notes Line Of Credit Facility Interest Rate Description Number of days after Financial Year End during which Excess Cash Flow Offer has to be made. Price in percent at which Excess Cash Flow Offer is made to Repurchase Notes Excess Cash flow amount offered to repurchase notes to include principle, redemption premium, unpaid and accrued interest. Amount of Notes tendered and accepted pursuant to excess cash flow offer. Price in percent at which excess cash flow offer is made Price Percentage For Excess Cash Flow Offer To Repurchase Notes Period within which Excess Cash Flow Offer is to be made Period For Excess Cash Flow Offer Excess cash flow amount offered Excess Cash Flow Offered To Repurchase Notes Amount of Notes tendered and accepted Notes Tendered And Accepted Pursuant To Excess Cash Flow Offer Price percentage for excess cash flow and collateral sale offers to repurchase notes. Amount Accepted On Pro Rata Basis On Completion Of Cash Flow And Collateral Tender Offer Number Of Vessels Sold Excess cash flow and collateral sale offers to repurchase notes. Number of vessels sold Number Of Vessels Sold Excess cash flow and collateral sale offers, amount Excess Cash Flow And Collateral Sale Offers To Repurchase Notes Price in percent at which excess cash flow and collateral sale offers are made Price Percentage For Excess Cash Flow And Collateral Sale Offers To Repurchase Notes Principal amount accepted on pro rata basis on completion of cash flow and collateral tender offer Amount Accepted On Pro Rata Basis On Completion Of Cash Flow And Collateral Tender Offer Purchase of principal amount of secured notes Gain on purchase of secured notes Senior secured revolving credit facility Line Of Credit Facility Maximum Borrowing Capacity Maturity date of credit facility Repayment of credit facility Repayments Of Long Term Lines Of Credit Credit facility margin Debt Instrument Basis Spread On Variable Rate1 Debt repayment date The original length of the line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format Secured Term Loan [Member] Secured Term Loan [Member] Secured Term Loan [Member] Secured term loan facility Credit facility maturity period Debt Instrument Expiration Period Credit facility description Line Of Credit Facility Description Debt Instrument, Redemption, Period Debt Instrument Redemption Period [Axis] Debt Instrument, Redemption, Period Debt Instrument Redemption Period [Domain] Debt instrument redemption period first and second anniversary. First and Second Anniversary [Member] Debt Instrument Redemption Period First And Second Anniversary [Member] Third Anniversary [Member] Debt Instrument Redemption Period Three [Member] Fourth Anniversary [Member] Debt Instrument Redemption Period Four [Member] Two thousand twenty two and super senior term loan. 2022 Notes and Super Senior Term Loan [Member] Two Thousand Twenty Two Notes And Super Senior Term Loan [Member] Proceeds from debt issuance, net of costs Debt instrument minimum cash balance required on each quarterly test date. Minimum cash balance requirement Debt Instrument Minimum Cash Balance Price percentage for annual offer to purchase notes through maturity. Annual amount offered to repurchase notes. Annual amount of notes to be repurchased. Total Secured Notes and Super Senior Term Loan due for repayment in year 1 Long Term Debt Maturities Repayments Of Principal In Next Twelve Months Total Secured Notes and Super Senior Term Loan due for repayment in year 2 Long Term Debt Maturities Repayments Of Principal In Year Two Total Secured Notes and Super Senior Term Loan due for repayment in year 3 Long Term Debt Maturities Repayments Of Principal In Year Three Total Secured Notes and Super Senior Term Loan due for repayment in year 4 Long Term Debt Maturities Repayments Of Principal In Year Four Price in percentage for annual offer to purchase notes through maturity Price Percentage For Annual Offer To Purchase Notes Through Maturity Annual amount offered to repurchase notes Annual Amount Offered To Repurchase Notes Annual amount of notes to be repurchased Annual Amount Of Notes To Be Repurchased First Year [Member] Debt Instrument Redemption Period One [Member] Second Year [Member] Debt Instrument Redemption Period Two [Member] Interest rate of term loan Term loan redemption amount Debt Instrument Periodic Payment Principal 2018 2019 2020 2021 2022 Long Term Debt Maturities Repayments Of Principal In Year Five Gross Total Debt Instrument Carrying Amount Less: original issue discount Debt Instrument Unamortized Discount Less: deferred financing costs Additional Deferred Financing Costs Amortization of deferred financing charges in the period included within interest expense. Deferred Finance Costs Net [Abstract] Opening balance Deferred Finance Costs Net Expenditure in the period Additional Deferred Financing Costs Amortization included within interest expense Amortization Of Deferred Financing Charges In Period Included Within Interest Expense Closing balance Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract] Fees and related costs deferred Deferred Finance Costs Gross Debt instrument maturities month year. Unamortized balance of deferred financing costs written off Write Off Of Deferred Debt Issuance Cost Debt facilities termination date Debt Instrument Maturities Month Year Component Of Other Operating Income [Line Items] Component Of Other Operating Income [Table] Component Of Other Operating Income [Table] Component Of Other Operating Income [Table] Sundry Shipping Income [Member] Sundry Shipping Income [Member] Sundry Shipping Income [Member] Component Of Other Operating Income [Line Items] Component Of Other Operating Income [Line Items] Total other operating income Voting interest. Schedule Of Related Party Transactions By Related Party [Table] Schedule Of Related Party Transactions By Related Party [Table] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Voting interest Voting Interest Maximum contracted charter hire receivable. Number of vessels chartered. Maximum contracted charter hire receivable Maximum Contracted Charter Hire Receivable Number of vessels Number Of Vessels Chartered Annual ship management fees per vessel. Number of vessels under technical management. Annual ship management fee per vessel Annual Ship Management Fees Per Vessel Number of vessels under technical management Number Of Vessels Under Technical Management Charter hire future maximum contracted receivable current. Charter hire future maximum contracted receivable in two years. Charter hire future maximum contracted receivable in three years. Charter hire future maximum contracted receivable in four years. Charter hire future maximum contracted receivable in five years. Charter hire future maximum contracted receivable thereafter. 2018 Charter Hire Future Maximum Contracted Receivable Current 2019 Charter Hire Future Maximum Contracted Receivable In Two Years 2020 Charter Hire Future Maximum Contracted Receivable In Three Years 2021 Charter Hire Future Maximum Contracted Receivable In Four Years 2022 Charter Hire Future Maximum Contracted Receivable In Five Years Thereafter Charter Hire Future Maximum Contracted Receivable Thereafter Maximum Future Contracted charter Hire Number of classes of common stock. Schedule Of Stock By Class [Table] Schedule Of Stock By Class [Table] Plan Name Plan Name [Axis] Plan Name Plan Name [Domain] Two Thousand And Fifteen Equity Incentive Plan [Member] 2015 Plan [Member] Two Thousand And Fifteen Equity Incentive Plan [Member] Title of Individual Title Of Individual [Axis] Relationship to Entity Title Of Individual With Relationship To Entity [Domain] Director [Member] Director [Member] Dividends Dividends [Axis] Dividends Dividends [Domain] Installment 3 FY 2014 [Member] Third Quarter, 2014 [Member] Installment3 F Y2014 [Member] Installment 4 F- Y- 2017. Fourth Quarter, 2017 [Member] Installment4 F Y2017 [Member] Class of Stock [Line Items] Class Of Stock [Line Items] Classes of common shares Number Of Classes Of Common Stock Amount of Dividend to be paid for four consecutive Quarters, after arrearages have been paid up, for Class B Common Shares convert to Class A common Shares on a one to one basis. Dividend required for Class B conversion Dividend Required For Class B Conversion Possible future conversion basis for Class B common shares to Class A common shares Common Stock Conversion Features Common stock dividends paid Common Stock Dividends Per Share Cash Paid Share based compensation arrangement by share based payment award shares issued percentage of directors fee. Maximum number of shares available for issuance under plan. Share based compensation arrangement by share based payment award shares issued in period notional value per share. Maximum issuance shares Maximum Number Of Shares Available For Issuance Under Plan Shares issued Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period Shares issued as percentage of directors base fee Share Based Compensation Arrangement By Share Based Payment Award Shares Issued Percentage Of Directors Fee Shares issued notional value per share Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period Notional Value Per Share Preferred Stock Depository Shares Issued Preferred stock issue description. Preferred Stock Redemption Price Per Depository Share Net proceeds from issuance of preferred stock. Depositary shares issued Preferred Stock Depository Shares Issued Preferred stock issuance term description Preferred Stock Issue Description Redemption price per share Preferred Stock Redemption Price Per Share Redemption price per depositary share Preferred Stock Redemption Price Per Depository Share Net proceeds from issuance Net Proceeds From Issuance Of Preferred Stock Dividend declaration date Dividends Payable Date Declared Day Month And Year Term of the incentive plan. Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Two Thousand Eight Equity Incentive Plan [Member] 2008 Plan [Member] Two Thousand Eight Equity Incentive Plan [Member] Award Type Award Type [Axis] Equity Award Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Restricted Stock Units (RSUs) [Member] Restricted Stock Units R S U [Member] Vesting Vesting [Axis] Vesting Vesting [Domain] Second Tranche [Member] Share Based Compensation Award Tranche Two [Member] First Tranche [Member] Share Based Compensation Award Tranche One [Member] Management [Member] Management [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Term of Equity Incentive Plan Long Term Incentive Plan Term Maximum number of shares approved under Equity Incentive Plan Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized Maximum number of shares which may be granted to any participant in any fiscal year Share Based Compensation Arrangement By Share Based Payment Award Maximum Number Of Shares Per Employee Common stock shares awarded Unvested, Number of Units, opening balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Vested, Number of Units Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Unvested, Number of Units, closing balance Granted, Number of Units Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Unvested, Weighted Average Fair Value on Grant Date, opening balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Vested, Weighted Average Fair Value on Grant Date Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value Unvested, Weighted Average Fair Value on Grant Date, closing balance Granted, Weighted Average Fair Value on Grant Date Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Number of members. Restricted stock share based compensation initial vesting period. Number of members granted with restricted stock units Number Of Members Restricted stock share based compensation vesting period Restricted Stock Share Based Compensation Initial Vesting Period Number of tranches. Number of consecutive trading days. Share based compensation arrangement by share based payment award earliest vesting date. Share based compensation arrangement by share based payment award vesting stock price. Vesting date Share Based Compensation Arrangement By Share Based Payment Award Earliest Vesting Date Number of tranches Number Of Tranches Number of stock granted Stock price Share Based Compensation Arrangement By Share Based Payment Award Vesting Stock Price Number of consecutive trading days Number Of Consecutive Trading Days Equity Incentive Plan description Share Based Compensation Arrangement By Share Based Payment Award Description Recognized share based compensation expenses Allocated Share Based Compensation Expense Unrecognized compensation cost Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Number of banks holding deposits of cash and cash equivalents Number of banks in which cash and cash equivalents deposited Number Of Banks Holding Deposits Unvested restricted stock units Net income available to class A share holders for arrears. Available to allocate pro-rata between class A and class B basic. Available to allocate pro-rata between class A and class B diluted. Basic weighted average number of common shares outstanding Weighted Average Number Of Shares Outstanding Basic Weighted average number of RSU's without service conditions (note 12) Weighted Average Number Of Restricted Stock Units Without Service Conditions Dilutive effect of share-based incentive awards Incremental Common Shares Attributable To Share Based Payment Arrangements Common shares and common share equivalents, diluted Basic Earnings per Share Earnings Per Share Basic [Abstract] Net loss available to common shareholders Available to - Class A shareholders for arrears Net Income Available To Class A Share Holders For Arrears Available to- allocate pro-rata between Class A and B Available To Allocate Pro Rata Between Class A And Class B Basic Earnings per share Diluted Earnings per Share Earnings Per Share Diluted [Abstract] Net loss available to common shareholders Net Income Loss Available To Common Stockholders Diluted Available to - allocate pro rata between Class A and B Available To Allocate Pro Rata Between Class A And Class B Diluted Earnings per share Subsequent Event [Table] Subsequent Event [Table] Subsequent Event [Line Items] Subsequent Event [Line Items] Charter redelivery periods. Charter redelivery periods Charter Redelivery Periods Contracted purchase price. Contracted purchase price Contracted Purchase Price Preferred stock dividends per share declared Preferred Stock Dividends Per Share Declared