Goodwill and Other Intangible Assets (Details) (USD $)	3 Months Ended								3 Months Ended						3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012	Mar. 31, 2013 Favorable Lease [Member]	Mar. 31, 2013 Favorable Charter [Member]	Mar. 31, 2013 UOS	Nov. 30, 2012 UOS		Mar. 31, 2013 UOS Trade Names [Member]	Mar. 31, 2013 UOS Customer Relationships [Member]	Mar. 31, 2013 UOS Favorable Lease [Member]	Mar. 31, 2013 FSI	Aug. 06, 2012 FSI		Mar. 31, 2013 FSI Trade Names [Member]	Mar. 31, 2013 FSI Customer Relationships [Member]
Goodwill [Roll Forward]
Balance at 12/31/12	$ 2,700,000	[1]					$ 1,943,000	[2]					$ 828,000	[3]
Additions	71,000	[1]				42,000						29,000
Retirements/Disposals	0	[1]
Amortization	0	[1]
Balance at 3/31/13	2,771,000	[1]					1,943,000	[2]					828,000	[3]
Total Indefinite Life Intangibles [Roll Forward]
Balance at 12/31/12	2,700,000
Additions	71,000
Retirements/Disposals	0
Amortization	0
Balance at 3/31/13	2,771,000
Finite-Lived Intangible Assets [Line Items]
Amortization Period				13 months	24 months				96 months	96 months					240 months	240 months
Total Definite Life Intangibles [Roll Forward]
Balance at 12/31/12	46,784,000			941,000	644,000				1,786,000	30,605,000	11,328,000				63,000	417,000
Additions	0			0	0				0	0	0				0	0
Retirements/Disposals	0			0	0				0	0	0				0	0
Amortization	(1,873,000)		(643,000)	(200,000)	(644,000)				(56,000)	(966,000)	0				(1,000)	(5,000)
Balance at 3/31/13	43,913,000			741,000	0				1,730,000	29,639,000	11,328,000				63,000	412,000
Total Intangibles [Roll Forward]
Balance at 12/31/12	48,484,000
Additions	71,000
Retirements/Disposals	0
Amortization	(1,873,000)		(643,000)	(200,000)	(644,000)				(56,000)	(966,000)	0				(1,000)	(5,000)
Balance at 3/31/13	$ 46,684,000

[1] The addition of $71,000 in goodwill is associated with post acquisition settlement adjustments on our 2012 acquistiions. FSI was increased by $29,000 and UOS was increased by $42,000.

[2] Goodwill is calculated as the excess of the consideration transferred over the net assets acquired and represents the future economic benefits arising from other assets acquired that could not be individually identified and separately recognized. Our above-described goodwill will not be amortized nor do we expect it to be deductible for tax purposes. Specifically, the goodwill recorded as part of the acquisition of UOS includes the following: • the expected synergies and other benefits that we believe will result from combining the operations of UOS withour existing Jones Act operations. • any intangible assets that do not qualify for separate recognition, including an assembled workforce of theacquired company, and • the anticipated higher rate of return of UOS's existing businesses as going concerns compared to the anticipatedrate of return if we had acquired all of the net assets separately.

[3] Goodwill is calculated as the excess of the consideration transferred over the net assets acquired and represents the future economic benefits arising from other assets acquired that could not be individually identified and separately recognized. Our above-described goodwill will not be amortized nor do we expect it to be deductible for tax purposes. Specifically, the goodwill recorded as part of the acquisition of the Acquired Companies includes the following: • the expected synergies and other benefits that we believe will result from combining the operations of UOS withour existing Jones Act operations. • any intangible assets that do not qualify for separate recognition, including an assembled workforce of theacquired company, and • the anticipated higher rate of return of UOS's existing businesses as going concerns compared to the anticipatedrate of return if we had acquired all of the net assets separately.