Income Taxes - Provision/(Benefit) For Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current:
U.S. Federal	$ 3,859	$ (921)	$ 649
Foreign	38,707	41,244	52,783
State and local	2,006	932	1,812
Total current	44,572	41,255	55,244
Deferred:
U.S. Federal	(2,344)	9,727	(9,431)
Foreign	(11,479)	(35,318)	(30,368)
State and local	(844)	(2,849)	(884)
Total deferred	(14,667)	(28,440)	(40,683)
Taxes on income	$ 29,905	$ 12,815	$ 14,561