Income Taxes (Components Of Net Deferred Tax (Liability) Asset) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
DEFERRED TAX LIABILITIES [Abstract]
Fixed Assets	$ (10,067)	$ (7,576)
Drydock Activities	(6,315)	(2,825)
Intangibles/Goodwill		(173)
Post-Retirement Benefits	(794)	(324)
Total Deferred Tax Liabilities	(17,176)	(10,898)
DEFERRED TAX ASSETS [Abstract]
Net Operating Loss Carryforwards	15,525	9,861
Minimum Tax Credit	5,179	5,179
Deferred Gain	2,374	2,524
Pension/Postretirement	2,568	4,510
Intangibles/Goodwill	586
Insurance and Claims Reserve	76	411
Work Opportunity Tax Credit	537	537
Lease Incentives	508	546
Other Assets	796	844
Total Deferred Tax Assets	28,149	24,412
Valuation Allowance	(869)	(13,514)
Net Deferred Tax Assets	27,280	10,898
TOTAL	10,104
DEFERRED TAX COMPONENTS [Abstract]
Current	3,084	323
Non-current	$ 7,020	$ (323)