Condensed Consolidated Statements Of Operations (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Condensed Consolidated Statements Of Operations [Abstract]
Revenues	$ 68,026,000	$ 72,694,000
Operating Expenses:
Voyage Expenses	52,211,000	57,433,000
Amortization Expense	5,187,000	5,163,000
Vessel Depreciation	5,543,000	6,721,000
Other Depreciation	184,000	184,000
Administrative and General Expenses	5,022,000	5,449,000
Loss on Sale of Other Assets	68,000
Total Operating Expenses	68,215,000	74,950,000
Operating Loss	(189,000)	(2,256,000)
Interest and Other:
Interest Expense	2,668,000	2,145,000
Derivative Loss	2,810,000	14,000
Loss on Extinguishment of Debt	95,000
Other Income from Vessel Financing	(445,000)	(489,000)
Investment Income	(7,000)	(19,000)
Foreign Exchange Loss	45,000	84,000
Total Interest and Other Income	5,166,000	1,735,000
Loss Before Provision (Benefit) for Income Taxes and Equity in Net Income (Loss) of Unconsolidated Entities	(5,355,000)	(3,991,000)
Provision (Benefit) for Income Taxes	39,000	(882,000)
Equity in Net Income (Loss) of Unconsolidated Entities (Net of Applicable Taxes)	893,000	(108,000)
Net Loss	(4,501,000)	(3,217,000)
Preferred Stock Dividends	1,305,000	1,305,000
Net Loss Attributable to Common Stockholders	$ (5,806,000)	$ (4,522,000)
Loss Per Common Share:
Basic (in dollars per share)	$ (0.79)	$ (0.62)
Diluted (in dollars per share)	$ (0.79)	$ (0.62)
Weighted Average Shares of Common Stock Outstanding:
Basic (in shares)	7,308,482	7,252,075
Diluted (in shares)	7,308,482	7,252,075
Common Stock Dividends Per Share (in dollars per share)	$ 0.25	$ 0.25