Consolidated Balance Sheets Consolidated Balance Sheets [Abstract] Assets Assets [Abstract] Current assets Current assets [Abstract] Cash and cash equivalents Trade accounts receivable, net Other receivables Inventories Due from related companies Restricted cash Trading securities Derivatives Prepaid expenses Total current assets Fixed assets Fixed assets [Abstract] Vessels, net Long-term assets Long-term assets [Abstract] Restricted cash Deferred charges, net Investment in joint venture Total long-term assets Total assets Liabilities and shareholders' equity Liabilities and shareholders' equity [Abstract] Current liabilities Current liabilities [Abstract] Long-term debt, current portion Trade accounts payable Accrued expenses Accrued dividends Due to related companies Deferred revenues Derivatives Total current liabilities Long-term liabilities Long-term liabilities [Abstract] Long-term debt, net of current portion Derivatives The liability arising from the market value of the time charter assumed from a vessel acquisition. Fair value of below market time charters acquired Total long-term liabilities Total liabilities Commitments and contingencies Shareholders' equity Shareholders' equity [Abstract] Common stock (par value $0.03, 200,000,000 shares authorized, 31,002,211 and 31,167,211 issued and outstanding) Preferred shares (par value $0.01, 20,000,000 shares authorized, no shares issued and outstanding) Additional paid-in capital Accumulated deficit Total shareholders' equity Total liabilities and shareholders' equity Common stock, par value (in Dollars per share) Common stock, shares authorized Common stock, shares issued Common stock, shares outstanding Preferred shares, par value (in Dollars per share) Preferred shares, shares authorized Preferred shares, shares issued Preferred shares, shares outstanding Consolidated Statements of Operations Consolidated Statements of Operations [Abstract] Revenues Revenues [Abstract] Revenues arising from services provided to charterers according to the terms and conditions included in charter agreements. Voyage revenue Related party revenue Commissions (including $766,879, $612,998 and $766,304, respectively, to related party) Net revenue Operating expenses Operating expenses [Abstract] Costs relating to the voyages performed by the vessels and may include port, canal, bunker expenses, commissions and other. Voyage expenses Vessel operating expenses (including $342,395, $417,523 and $392,731, respectively, to related party) Drydocking expenses Vessel depreciation Related party management fees Other general and administrative expenses (including $1,150,000, $1,165,000 and $1,225,000, respectively, to related party) Net loss on sale of vessels Charter termination fee and other income Total operating expenses Operating income / (loss) Other income/(expenses) Other income/(expenses) [Abstract] Interest and other financing costs Change in fair value of derivatives Foreign exchange gain/(loss) Realized gain on investments Unrealized loss on investments Interest income Other expenses, net Equity loss in joint venture Net income / (loss) Earnings / (loss) per share - basic (in Dollars per share) Weighted average number of shares outstanding during the year, basic (in Shares) Earnings / (loss) per share - diluted (in Dollars per share) Weighted average number of shares outstanding during the year, diluted (in Shares) Represents commissions incurred in the period based upon the sale by related parties of the entity's goods or services, and fees for sales assistance or product enhancements performed by related parties. Generally recurring costs paid to related parties associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Excludes Selling, General and Administrative Expense. Commissions, related party Vessel operating expenses, related party Other general and administrative expenses, related party Consolidated Statements of Shareholders' Equity Consolidated Statements of Shareholders' Equity [Abstract] Equity Component [Domain] Balance Balance Balance (in Shares) Balance (in Shares) Net income (loss) Issuance of shares in "Continuous Offering Program, net of issuance costs" Issuance of shares in "Continuous Offering Program, net of issuance costs" (in Shares) Issuance of restricted shares for stock incentive award and share-based compensation Issuance of restricted shares for stock incentive award and share-based compensation (in Shares) Dividends declared (see Note 13) Dividends declared (see Note 13), per share Consolidated Statements of Cash Flows Consolidated Statements of Cash Flows [Abstract] Cash flows from operating activities: Cash flows from operating activities: [Abstract] Net (loss) / income Adjustments to reconcile net income / (loss) to net cash provided by operating activities: Adjustments to reconcile net income / (loss) to net cash provided by operating activities: [Abstract] Depreciation of vessels Amortization of deferred charges The amortization of the liability arising from the market value of the time charter assumed from a vessel acquisition. Amortization of fair value of time charters Loss on sale of vessels Share-based compensation Investment in trading securities, net (Gain) / loss on trading securities Unrealized loss / (gain) on derivatives Loss in investment in joint venture Changes in operating assets and liabilities: Changes in operating assets and liabilities: [Abstract] (Increase)/decrease in: (Increase)/decrease in: [Abstract] Trade accounts receivable Prepaid expenses Other receivables Inventories Other deposits Due from related companies Increase/(decrease) in: Increase/(decrease) in: [Abstract] Due to related companies Trade accounts payable Accrued expenses Deferred revenue Net cash provided by operating activities Cash flows from investing activities: Cash flows from investing activities: [Abstract] Purchase of vessels including improvements Investment in joint venture Insurance proceeds Change in restricted cash Proceeds from sale of vessels Net cash provided by (used in) investing activities Cash flows from financing activities: Cash flows from financing activities: [Abstract] Issuance of share capital Proceeds from shares issued Offering expenses paid Dividends paid Loan arrangement fees paid Proceeds from long-term debts Repayment of long-term debts Net cash provided by / (used in) financing activities Net decrease in cash and cash equivalents Cash and cash equivalents at beginning of year Cash and cash equivalents at end of year Cash paid for interest Non cash items: Non cash items: [Abstract] Other increase in accrued expenses and deferred charges The change in the carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Change in accrued dividends Note 1 - Basis of Presentation and General Information Business Description and Basis of Presentation [Text Block] Note 2 - Significant Accounting Policies Significant Accounting Policies [Text Block] Note 3 - Inventories Inventory Disclosure [Text Block] Note 4 - Vessels, net Property, Plant and Equipment Disclosure [Text Block] Note 5 - Deferred Charges, net The entire disclosure for deferred charges. Deferred Charges [Text Block] Note 6 - Accrued Expenses Accounts Payable and Accrued Liabilities Disclosure [Text Block] Note 7 - Fair Value of Above or Below Market Time Charters Acquired Fair Value Disclosures [Text Block] Note 8 - Related Party Transactions Related Party Transactions Disclosure [Text Block] Note 9 - Long-Term Debt Long-term Debt [Text Block] Note 10 - Income Taxes Income Tax Disclosure [Text Block] Note 11 - Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Note 12 - Stock Incentive Plan Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Note 13 - Earnings / (Loss) Per Share Earnings Per Share [Text Block] Note 14 - Voyage, Vessel Operating Expenses and Commissions This element repsresents the disclosure for Voyage expenses (Port charges, bunkers, commissions charged by third parties, commissions charged by related parties) and Vessel Operating expenses (crew wages and related costs, insurances, repairs, spares and maintenance, consumable stores, tonnage taxes, miscellaneous). Vessel Voyage And Operating Expenses [Text Block] Note 15 - Financial Instruments Financial Instruments Disclosure [Text Block] Note 16 - Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Note 17 - Investment in Joint Venture Equity Method Investments and Joint Ventures Disclosure [Text Block] Note 18 - Charter Termination Fees and Other Income Other Income and Other Expense Disclosure [Text Block] Note 19 - Subsequent Events Subsequent Events [Text Block] Scenario [Axis] Additional Paid-in Capital [Member] Preferred Stock [Member] Equity Components [Axis] Retained Earnings [Member] Common Stock [Member] Scenario, Unspecified [Domain] Comprehensive Income [Member] Document and Entity Information [Abstract] VesselVoyageAndOperatingExpensesTextBlock DeferredChargesTextBlock AmortizationOfFairValueOfTimeCharters Liabilities, Current Unrealized Gain (Loss) on Derivatives Operating Expenses Increase (Decrease) in Prepaid Expense Restricted Cash and Cash Equivalents, Noncurrent Assets, Noncurrent Revenue, Net Net Cash Provided by (Used in) Investing Activities Document Period End Date Net Cash Provided by (Used in) Operating Activities Cash and Cash Equivalents, Period Increase (Decrease) Assets, Current Amendment Flag Payments to Acquire Property, Plant, and Equipment Increase (Decrease) in Accounts Receivable Payments to Acquire Interest in Joint Venture Interest and Debt Expense Entity Central Index Key Net Cash Provided by (Used in) Financing Activities Entity Common Stock, Shares Outstanding Increase (Decrease) in Other Receivables Derivative Assets, Current Increase (Decrease) in Due to Affiliates Increase (Decrease) in Accounts Payable, Trade Payments of Dividends Repayments of Bank Debt Entity Filer Category Document Fiscal Year Focus Dividends Entity Public Float Shares, Issued Entity Voluntary Filers Operating Income (Loss) Stock Issued During Period, Shares, New Issues Liabilities and Equity Assets Entity Current Reporting Status Entity Registrant Name Increase (Decrease) Due from Affiliates Nonoperating Income (Expense) Gain (Loss) on Sale of Property Plant Equipment Payments of Financing Costs Entity Well-known Seasoned Issuer Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Other Income Stockholders' Equity Attributable to Parent Sales Commissions and Fees Increase (Decrease) in Inventories Amendment Description Document Type Increase (Decrease) in Accrued Liabilities Net Realized and Unrealized Gain (Loss) on Trading Securities Derivative Liabilities, Current Increase (Decrease) in Restricted Cash Liabilities Payments of Stock Issuance Costs Increase (Decrease) in Deposit Assets Current Fiscal Year End Date Liabilities, Noncurrent Document Fiscal Period Focus Statement [Table] Statement [Line Items]