CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) [Abstract]
Revenues	$ 81,124	$ 65,204
Operating Expenses:
Voyage Expenses	69,591	50,826
Vessel Depreciation	5,771	6,357
Other Depreciation	23	0
Administrative and General Expenses	5,433	5,508
Gain on Sale/Purchase of Other Assets	0	(3,799)
Total Operating Expenses	80,818	58,892
Operating Income	306	6,312
Interest and Other:
Interest Expense	2,201	2,727
Derivative Gain	(77)	(149)
Gain on Sale of Investment	0	(42)
Other Income from Vessel Financing	(555)	(622)
Investment Income	(40)	(128)
Foreign Exchange Gain	(3,181)	(3,648)
Total Interest and Other Income	(1,652)	(1,862)
Income Before Provision for Income Taxes and Equity in Net Income of Unconsolidated Entities	1,958	8,174
(Benefit) Provision for Income Taxes:
Current	35	168
Income Tax Expense (Benefit)	35	168
Equity in Net (Loss) Income of Unconsolidated Entities (Net of Applicable Taxes)	(270)	(70)
Net Income	1,653	7,936
Preferred Stock Dividends	251	0
Net Income Available to Common Stockholders	$ 1,402	$ 7,936
Basic and Diluted Earnings per Common Share:
Basic Earnings Per Common Share: (in dollars per share)	$ 0.19	$ 1.11
Diluted Earnings Per Common Share: (in dollars per share)	$ 0.19	$ 1.11
Weighted Average Shares of Common Stock Outstanding:
Basic (in shares)	7,212,901	7,170,611
Diluted (in shares)	7,233,400	7,170,611
Dividends Per Share (in dollars per share)	$ 0.250	$ 0.250