CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) [Abstract]
Revenues	$ 74,897	$ 60,320	$ 156,021	$ 125,524
Operating Expenses:
Voyage Expenses	61,508	47,026	131,099	97,852
Vessel Depreciation	5,804	5,723	11,575	12,080
Other Depreciation	11	0	34	0
Administrative and General Expenses	6,170	4,720	11,603	10,228
Gain on Sale/Purchase of Other Assets	0	(667)	0	(4,466)
Total Operating Expenses	73,493	56,802	154,311	115,694
Operating Income	1,404	3,518	1,710	9,830
Interest and Other:
Interest Expense	2,077	2,281	4,278	5,008
Derivative (Gain)/Loss	(205)	117	(282)	(32)
Gain on Sale of Investment	0	(24)	0	(66)
Other Income from Vessel Financing	(539)	(605)	(1,094)	(1,227)
Investment Income	(42)	(146)	(82)	(274)
Foreign Exchange (Gain) /Loss	(1,836)	1,734	(5,017)	(1,914)
Total Interest and Other Income	(545)	3,357	(2,197)	1,495
Income Before Provision for Income Taxes and Equity in Net (Loss) Income of Unconsolidated Entities	1,949	161	3,907	8,335
(Benefit) Provision for Income Taxes:
Current	15	108	50	276
Income Tax Expense	15	108	50	276
Equity in Net (Loss) Income of Unconsolidated Entities (Net of Applicable Taxes)	(75)	651	(345)	581
Net Income	1,859	704	3,512	8,640
Preferred Stock Dividends	594	0	845	0
Net Income Available to Common Stockholders	$ 1,265	$ 704	$ 2,667	$ 8,640
Basic and Diluted Earnings per Common Share:
Basic Earnings Per Common Share: (in dollars per share)	$ 0.17	$ 0.10	$ 0.37	$ 1.20
Diluted Earnings Per Common Share: (in dollars per share)	$ 0.17	$ 0.10	$ 0.37	$ 1.20
Weighted Average Shares of Common Stock Outstanding:
Basic (in shares)	7,239,780	7,203,860	7,226,415	7,187,236
Diluted (in shares)	7,263,206	7,234,505	7,248,377	7,202,559
Common Stock Dividends Per Share (in dollars per share)	$ 0.250	$ 0.250	$ 0.500	$ 0.500