Accumulated Other Comprehensive Income (Loss) ("OCI") (Components Of Accumulated OCI) (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Equity [Abstract]
Cumulative foreign currency translation adjustment		$ (28,141)	$ (30,161)
Unrealized loss on hedges, net	[1]	(34,323)	(32,091)
Accumulated other comprehensive loss		(62,464)	(62,252)
Deferred tax asset, other comprehensive loss		$ 18,500	$ 17,300

[1] Amounts relate to foreign currency hedges for the Grand Canyon, the Grand Canyon II and the Grand Canyon III charters as well as interest rate swap contracts for the Term Loan and the Nordea Term Loan, and are net of deferred income taxes totaling $18.5 million at June 30, 2015 and $17.3 million at December 31, 2014 (Note 14).