Accumulated Other Comprehensive Income (Loss) ("OCI") (Components Of Accumulated Other Comprehensive Loss) (Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013
Accumulated Other Comphrensive Income (Loss) ("OCI") [Abstract]
Cumulative foreign currency translation adjustment	$ (9,350,000)		$ (10,697,000)
Unrealized loss on hedges, net	(6,928,000)	[1]	(9,991,000)	[1]
Accumulated other comprehensive loss	(16,278,000)		(20,688,000)
Deferred tax asset, other comprehensive loss	$ 3,700,000		$ 5,400,000

[1] Amounts are related 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 are net of deferred income taxes totaling $3.7 million and $5.4 million as of March 31, 2014 and December 31, 2013, respectively (Notes 6 and 14).