Goodwill, Other Intangible Assets, And Deferred Charges (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Goodwill And Other Intangible Assets [Line Items]
Deferred debt issuance costs reclassified from deferred charges, net	$ 2,363		$ 2,363		$ 2,870
Amortization expense on deferred finance costs	800	$ 100	1,200	$ 400
Amortization of Intangible Assets	700	1,000	1,879	3,087
Amortization expense for deferred charges	$ 3,100	$ 5,100	11,500	$ 13,800
Goodwill impairment loss			1,907
Jones Act [Member]
Goodwill And Other Intangible Assets [Line Items]
Goodwill impairment loss			$ 1,900