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Consolidated Statements of Cash Flows (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2009
Dec. 31, 2011
Dec. 31, 2010
Cash flows from operating activities:      
Net (loss) income $ (15,820) $ (431,112) $ 8,322,435
Adjustments to reconcile net (loss) income to net cash provided by operating activities:      
Depreciation   14,768,703 7,358,789
Amortization of deferred financing costs   467,018 269,976
Amortization of nonvested stock compensation expense   2,764,838 2,891,548
Change in assets and liabilities:      
Increase in due from charterers   (986,782) (666,007)
Increase in prepaid expenses and other current assets   (74,598) (2,392,838)
(Decrease) increase in accounts payable and accrued expenses   (214,179) 2,186,398
(Decrease) increase in due to Parent 15,820 (600,923) 643,751
(Decrease) increase in deferred revenue   (314,848) 385,288
Net cash provided by operating activities   15,378,117 18,999,340
Cash flows from investing activities:      
Purchase of vessels, including deposits   (2,570,106) (389,758,152)
Purchase of other fixed assets     (43,444)
Net cash used in investing activities   (2,570,106) (389,801,596)
Cash flows from financing activities:      
Proceeds from the 2010 Credit Facility     101,250,000
Capital contribution from Parent     75,000,000
Cash dividends paid   (10,166,565) (7,191,929)
Proceeds from issuance of capital stock 1    
Proceeds from issuance of common stock     214,508,000
Payments of common stock issuance costs     (4,078,175)
Payment of deferred financing costs   (138,662) (2,888,779)
Net cash (used in) provided by financing activities 1 (10,305,227) 376,599,117
Net increase in cash and cash equivalents 1 2,502,784 5,796,861
Cash and cash equivalents at beginning of period   5,796,862 1
Cash and cash equivalents at end of year $ 1 $ 8,299,646 $ 5,796,862