Income Taxes (Components Of Income Tax Provision) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Current: U.S. federal									$ 23,336	$ 24,688	$ 441
Current: State									72	1,926	1,031
Current: Foreign									6,588	3,165	3,527
Current: Total									29,996	29,779	4,999
Deferred: U.S. federal									(21,624)	(7,760)	869
Deferred: State									(87)	(450)	(798)
Deferred: Foreign									(2,844)	(1,682)	(732)
Deferred: Total									(24,555)	(9,892)	(661)
Total income tax provision	$ 75	$ 1,113	$ 694	$ 3,559	$ 5,248	$ 8,279	$ 4,791	$ 1,569	$ 5,441	$ 19,887	$ 4,338