Goodwill And Other Intangible Assets (Schedule Of Goodwill And Other Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Trade Names [Member] Frascati Shops, Inc. And Tower, LLC [Member]	Mar. 31, 2014 Trade Names [Member] United Ocean Services, LLC [Member]	Mar. 31, 2014 Customer Relationships [Member] Frascati Shops, Inc. And Tower, LLC [Member]	Mar. 31, 2014 Customer Relationships [Member] United Ocean Services, LLC [Member]
Goodwill And Other Intangible Assets [Line Items]
Goodwill, Beginning Balance	$ 2,735	$ 2,735
Goodwill, Ending Balance	2,735	2,735
Total Indefinite Life Intangibles, Beginning Balance	2,735	2,735
Total Indefinite Life Intangibles, Ending Balance	2,735	2,735
Amortized period			240 months	96 months	240 months	96 months
Definite Life Intangibles, Beginning Balance	27,727	28,756	60	1,561	396	26,739
Definite Life Intangibles, Accumulated Amortization	(1,029)		(1)	(56)	(5)	(967)
Definite Life Intangibles, Ending Balance	27,727	28,756	59	1,505	391	25,772
Drydocking Costs, Beginning Balance	23,936	26,428
Drydocking Costs, Additions	1,775
Drydocking Costs, Accumulated Amortization	(4,135)
Drydocking Costs, Reclassified	(132)
Drydocking Costs, Ending Balance	23,936	26,428
Financing Charges and Other, Beginning Balance	2,792	2,881
Financing Charges and Other, Additions	62
Financing Charges and Other, Accumulated Amortization	(151)
Financing Charges and Other, Ending Balance	2,792	2,881
Total Deferred Charges, Beginning Balance	26,728	29,309
Total Deferred Charges, Additions	1,837
Total Deferred Charges, Amortization	(4,286)
Total Deferred Charges, Reclassified	(132)
Total Deferred Charges, Ending Balance	$ 26,728	$ 29,309