CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) [Abstract]
Revenues	$ 61,162	$ 67,087	$ 186,686	$ 201,382
Operating Expenses:
Voyage Expenses	45,394	46,911	143,246	147,715
Vessel Depreciation	6,100	6,775	18,180	18,244
Other Depreciation	9	0	9	0
Administrative and General Expenses	5,643	4,769	15,871	16,053
Gain on Dry Bulk Transaction	0	0	0	(18,844)
(Gain) Loss on Sale/Purchase of Other Assets	3	0	(4,463)	0
Total Operating Expenses	57,149	58,455	172,843	163,168
Operating Income	4,013	8,632	13,843	38,214
Interest and Other:
Interest Expense	2,144	2,850	7,152	7,470
Derivative Loss	129	124	97	109
Gain on Sale of Investment	0	(67)	(66)	(181)
Other Income from Vessel Financing	(588)	(654)	(1,815)	(2,014)
Investment Income	(117)	(137)	(391)	(522)
Foreign Exchange Loss (Gain)	1,143	2,664	(771)	3,075
Total Interest and Other Income	2,711	4,780	4,206	7,937
Income Before Provision for Income Taxes and Equity in Net (Loss) Income of Unconsolidated Entities	1,302	3,852	9,637	30,277
(Benefit) Provision for Income Taxes:
Current	4	150	280	531
Deferred	(400)	0	(400)	0
Income Tax Expense (Benefit)	(396)	150	(120)	531
Equity in Net Income (Loss)of Unconsolidated Entities (Net of Applicable Taxes)	84	(852)	665	22
Net Income	$ 1,782	$ 2,850	$ 10,422	$ 29,768
Basic and Diluted Earnings Per Common Share:
Basic Earnings Per Common Share: (in dollars per share)	$ 0.25	$ 0.40	$ 1.45	$ 4.18
Diluted Earnings Per Common Share: (in dollars per share)	$ 0.25	$ 0.40	$ 1.45	$ 4.15
Weighted Average Shares of Common Stock Outstanding:
Basic (in shares)	7,203,860	7,140,752	7,192,818	7,128,810
Diluted (in shares)	7,220,901	7,190,082	7,208,886	7,165,298
Dividends Per Share (in dollars per share)	$ 0.250	$ 0.375	$ 0.750	$ 1.125