Income Taxes (Provision For Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Federal, Current	$ 17,494	$ 2,664	$ 3,509
State, Current	5,251	2,427	1,674
Foreign, Current	6,486	4,975	12,871
Federal, Deferred	1,302	7,579	1,791
State, Deferred	176	15	1,284
Foreign, Deferred	2,948	(1,308)	(5,451)
Total income tax provision	$ 33,657	$ 16,352	$ 15,678