Shareholders' Equity (Components Of Accumulated Other Comprehensive Loss) (Details) (USD $)	Mar. 31, 2013		Dec. 31, 2012
Stockholders' Equity Note [Abstract]
Cumulative foreign currency translation adjustment	$ (26,748,000)		$ (15,667,000)
Unrealized gain (loss) on hedges, net	(7,238,000)	[1]
Accumulated other comprehensive loss	(33,986,000)		(15,667,000)
Deferred Tax Assets, Other Comprehensive Loss	$ 3,900,000

[1] Amount at March 31, 2013 is related to foreign currency hedges for the Grand Canyon, Grand Canyon II and Grand Canyon III and is net of deferred income taxes totaling $3.9 million.