Document and Entity Information [Abstract] Document And Entity Information [Abstract] Statement [Table] Class of Stock [Axis] Class Of Stock [Domain] Class of Stock [Domain] Common Class A [Member] Class A Common Stock [Member] Common Class B [Member] Class B Common Stock [Member] Statement [Line Items] Document Type Amendment Flag Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Entity Current Reporting Status Entity Voluntary Filers Entity Well-known Seasoned Issuer Entity Common Stock, Shares Outstanding Consolidated Balance Sheets [Abstract] Common Stock [Member] Common Stock [Member] Assets [Abstract] Assets Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents at end of Year Cash and Cash Equivalents at start of Year Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value, Total Restricted Cash and Cash Equivalents, Current Restricted cash (note 15) Accounts Receivable, Net, Current Accounts receivable Accounts Receivable, Net, Current, Total Sum of the amounts paid in advance for costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or one operating cycle if longer. Prepaid Expenses Current Prepaid expenses Other Receivables, Net, Current Other receivables Other Receivables, Net, Current, Total Deferred Tax Assets, Net, Current Deferred Tax Assets, Net, Current, Ending Balance Deferred Tax Assets, Net, Current, Beginning Balance Deferred tax Deferred Tax Assets, Net, Current, Total Deferred Finance Costs, Current, Net Deferred financing costs (note 9) Deferred Finance Costs, Current, Net, Total Assets, Current Total current assets Total current assets Long lived assets used for the primary purpose of water transportation including a drydock component, and net of accumulated depreciation and impairment. Vessels in Operation Net Vessels in operation (note 4) Other Assets, Noncurrent Other fixed assets Other Assets, Noncurrent, Total The fair value of vessel purchase options as at the date of the agreement granting the options, net of any impairment. Contractual Intangible Assets Intangible assets - vessel purchase options (note 7) The sum of gross carrying value of other intangible assets such as software development, less accumulated amortization and any impairment charges. Other Finite Lived Intangible Assets, Net Intangible assets - other (note 7) Deferred Tax Assets, Net, Noncurrent Deferred tax Deferred Tax Assets, Net, Noncurrent, Total Deferred Finance Costs, Noncurrent, Net Deferred financing costs (note 9) Deferred Finance Costs, Noncurrent, Net, Total Assets, Noncurrent Total non-current assets Total non-current assets Assets Total Assets Total Assets Liabilities and Equity [Abstract] Liabilities and Stockholders' Equity Long-term Debt, Current Maturities Current portion of long-term debt (note 11) Long-term Debt, Current Maturities, Total 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 amortised as an increase in time charter revenue over the remaining term of the relevant charter. Intangible Liability Charter Agreements Current Intangible liability - charter agreements (note 10) Accounts Payable, Current Accounts payable Accounts Payable, Current, Total Accrued Liabilities, Current Accrued expenses Accrued Liabilities, Current, Total Derivative Instruments and Hedges, Liabilities Derivative instruments (note 8) Derivative Instruments and Hedges, Liabilities, Total Liabilities, Current Total current liabilities Total current liabilities Long-term Debt Long-term debt (note 11) Long-term Debt, Total Aggregate stated value of issued preferred stock redeemable according to a fixed redemption schedule. Redeemable Preferred Stock, Value, Issued Preferred shares (note 15) 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 amortised as an increase in time charter revenue over the remaining term of the relevant charter. Intangible Liability Charter Agreements, Noncurrent Intangible liability - charter agreements (note 10) Derivative Liabilities, Noncurrent Derivative instruments (note 8) Liabilities, Noncurrent Total long-term liabilities Liabilities Total Liabilities Commitments and Contingencies' Commitments and contingencies (note 14) Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity Common Stock, Value, Issued Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common stock Common Stock, Value, Issued, Total Class B Common stock - authorized 20,000,000 shares with a $0.01 par value; 7,405,956 shares issued and outstanding (2009 - 7,405,956) Additional Paid in Capital, Common Stock Additional Paid in Capital, Common Stock, Ending Balance Additional Paid in Capital, Common Stock, Beginning Balance Additional paid in capital Retained Earnings (Accumulated Deficit) Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit), Beginning Balance Accumulated deficit Retained Earnings (Accumulated Deficit), Total Stockholders' Equity Attributable to Parent Balance Balance Balance Total Stockholders' Equity Total Stockholders' Equity Liabilities and Equity Total Liabilities and Stockholders' Equity Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Issued, Total Common Stock, Shares, Outstanding Balance, shares Balance, shares Common stock, shares outstanding Common stock, shares outstanding Consolidated Statements Of Income [Abstract] Revenues [Abstract] Operating Revenues Aggregate revenue during the reporting period from services rendered in the normal course of business, after deducting allowances and discounts and including amortization of charter agreement intangible liability. Time Charter Revenue Net Time charter revenue Costs and Expenses [Abstract] Operating Expenses The aggregate vessel operating expenses incurred during the reporting period. Vessel Operating Expenses Vessel operating expenses Depreciation Depreciation (note 4) Depreciation, Total General and Administrative Expense General and administrative General and Administrative Expense, Total Asset Impairment Charges Impairment charge (note 6) Asset Impairment Charges, Total Other Cost and Expense, Operating Other operating income (note 12) Other Cost and Expense, Operating, Total Operating Costs and Expenses Total operating expenses Operating Income (Loss) Operating Income Nonoperating Income (Expense) [Abstract] Non Operating Income (Expense) Investment Income, Interest Interest income Interest Expense Interest expense Interest expense Interest Expense, Total Realized loss on interest rate derivatives. Realized Loss on Interest Rate Derivatives Realized loss on interest rate derivatives Unrealized loss or gain on interest rate derivatives which do not qualify for hedge accounting. Unrealized (Loss) Gain on Interest Rate Derivatives Unrealized (loss) gain on interest rate derivatives (note 16) Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest (Loss) Income before Income Taxes Income (Loss) before Income Taxes Income Tax Expense (Benefit) Income taxes Income taxes Income Tax Expense (Benefit), Total Net Income (Loss) Attributable to Parent Net Income (Loss) Net Income (Loss) Net income (loss) for the year Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average number of common shares outstanding Weighted Average Number of Shares Outstanding, Basic Basic (note 19) Weighted Average Number of Shares Outstanding, Basic, Total Weighted Average Number of Shares Outstanding, Diluted Diluted (note 19) Weighted Average Number of Shares Outstanding, Diluted, Total Weighted average number of shares outstanding basic and diluted. Weighted Average Number of Share Outstanding Basic and Diluted Weighted average number of Class B common shares outstanding Basic and diluted (note 19) Earnings Per Share [Abstract] Net Income (Loss) in $ per share Earnings Per Share, Basic Basic (note 19) Earnings Per Share, Basic, Total Earnings Per Share, Diluted Diluted (note 19) Earnings Per Share, Diluted, Total Earnings Per Share, Basic and Diluted Net Income (Loss) in $ per Class B share Basic and diluted (note 19) Earnings Per Share, Basic and Diluted, Total Consolidated Statements 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 (Loss) to Net Cash Provided by Operating Activities Amortization of Financing Costs Amortization of deferred financing costs (note 9) Increase (Decrease) in Fair Value of Derivative Instruments, Not Designated as Hedging Instruments Change in fair value of certain derivative instruments (note 16) Change in fair value of certain derivative instruments The amount of intangible lease liability amortised as an increase in time charter revenue during the reporting period. Amortization Intangible Liabilities Amortization of intangible liability The aggregate amount of settlement in the reporting period of interest rate derivatives which do not qualify for hedge accounting. Settlement of Hedges not Qualifying for Hedge Accounting Settlements of hedges which do not qualify for hedge accounting (note 16) Share Based Compensations Share based compensation (note 17) Share-based Compensation, Total Increase (Decrease) in Accounts Receivable and Other Operating Assets (Increase) decrease in receivables and other assets Decrease (increase) in other receivables and other assets Increase (Decrease) in Accounts Payable and Other Operating Liabilities (Decrease) increase in accounts payable and other liabilities Foreign Currency Transaction Gain (Loss), Unrealized Unrealized foreign exchange (gain) loss Unrealized foreign exchange (gain) loss Net Cash Provided by (Used in) Operating Activities Unrealized foreign exchange (gain) loss Net Cash Provided by Operating Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash Flows from Investing Activities The aggregate amount of settlement in the reporting period of interest rate derivatives which do not qualify for hedge accounting. Settlements of Hedges Not Qualifying for Hedge Accounting Settlements of hedges which do not qualify for hedge accounting (note 16) Payments to Acquire Other Property, Plant, and Equipment Cash paid for other fixed assets Purchase of other fixed assets Payments to Acquire Intangible Assets Cash paid for intangible assets Cash paid for intangible assets The cash outflow for acquisition of purchase options for vessels. Acquisition Of Vessel Purchase Options Acquisition of vessel purchase options (note 7) Acquisition of vessel purchase options Expenditure in the reporting period on vessel purchases, vessel deposits and other capitalisable amounts. Expenditure on Vessels, Vessel Prepayments and Vessel Deposits Cash paid for purchase of vessels, vessel prepayments and vessel deposits Expenditure on vessels, vessel prepayments and vessel deposits Capitalised costs relating to drydocking. Capitalised Costs Relating to Drydocking Costs relating to drydockings 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 Proceeds from (Repayments of) Debt Proceeds from debt Proceeds from (Repayments of) Debt, Total Repayments of Long-term Debt Repayments of debt Repayments of debt Repayments of Long-term Debt, Total Payments of Debt Issuance Costs Issuance costs of debt Issuance costs of debt Payments of Dividends Dividend payments (note 15) Dividend payments Payments of Dividends, Total Net Cash Provided by (Used in) Financing Activities Net Cash (Used in) Provided by Financing Activities Net Cash (Used in) Provided by Financing Activities Cash and Cash Equivalents, Period Increase (Decrease) Net (Decrease) Increase in Cash and Cash Equivalents Supplemental Cash Flow Information [Abstract] Supplemental Information Interest Paid Total interest paid Interest Paid, Total Income Taxes Paid Total income tax paid Consolidated Statements Of Changes In Stockholders' Equity [Abstract] Statement, Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Parent [Member] Parent [Member] Stock Issued During Period, Value, Conversion of Convertible Securities Conversion of stock Stock Issued During Period, Shares, Conversion of Convertible Securities Conversion of stock, shares Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Units, Requisite Service Period Recognition Restricted Stock Units (note 17) Stock Issued During Period, Value, New Issues Stock issued during period Class A shares issued (note 15, 17) Stock Issued During Period, Shares, New Issues Class A shares issued, shares (note 15, 17) The cash outflow from the entity's earnings distributed as a dividend to common shareholders. Dividends, Excluding Preferred Shares Dividends declared (note 15) Dividends declared (note 17) Dividends, Total General [Abstract]. General [Abstract] General [Text Block]. General [Text Block] General Nature Of Operations And Basis Of Preparation [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Nature Of Operations And Basis Of Preparation Significant Accounting Policies [Abstract] Significant Accounting Policies [Text Block] Significant Accounting Policies Vessels In Operation, Less Accumulated Depreciation [Abstract] Property, Plant and Equipment Disclosure [Text Block] Vessels In Operation, Less Accumulated Depreciation Vessel Deposits [Abstract]. Vessel Deposits [Abstract] Disclosure on vessel deposits. Vessel Deposits [Text Block] Vessel Deposits Impairment Charge [Abstract] Asset Impairment Charges [Text Block] Impairment Charge Intangible Assets [Abstract] Intangible Assets Disclosure [Text Block] Intangible Assets Derivative Instruments [Abstract] Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative Instruments Deferred Financing Costs [Abstract] Deferred Financing Costs [Text Block]. Deferred Financing Costs [Text Block] Deferred Financing Costs Intangible Liability Charter Agreements [Abstract] Intangible Liability - Charter Agreements [Abstract] Disclosure on Intangible Liabilities. Intangible Liability Charter Agreements [Text Block] Intangible Liability - Charter Agreements Long Term Debt [Abstract] Long-term Debt [Text Block] Long Term Debt Other Operating (Income) Expense [Abstract] Other Operating (Income) Expense [Text Block] Other Operating (Income) Expense Related Party Transactions [Abstract] Related Party Transactions Disclosure [Text Block] Related Party Transactions Commitments And Contingencies [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments And Contingencies Share Capital [Abstract] Stockholders' Equity Note Disclosure [Text Block] Share Capital Interest Rate Derivatives and Fair Value Measurements [Abstract]. Interest Rate Derivatives And Fair Value Measurements [Abstract] Derivatives and Fair Value [Text Block] Interest Rate Derivatives and Fair Value Measurements Share-Based Compensation [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Share-Based Compensation Risks Associated With Concentration [Abstract] Concentration Risk Disclosure [Text Block] Risks Associated With Concentration Earnings Per Share [Text Block] Earnings Per Share Comparatives. Comparatives [Abstract] Comparatives [Text Block] Comparatives [Text Block] Comparatives Subsequent Events [Abstract] Subsequent Events [Text Block] Subsequent Events Common Class C [Member] Class C Common Stock [Member] Additional Paid In Capital [Member] Additional Paid In Capital [Member] Retained Earnings [Member] Accumulated (Deficit) [Member]