Income Taxes Schedule of Income Tax Provision (Benefit) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current Income Tax Expense (Benefit) [Abstract]
Federal	$ 11,935	$ 5,472	$ 10,486
State and local	1,387	2,045	765
Foreign	19,448	9,898	22,715
Total current	32,770	17,415	33,966
Deferred Income Tax Expense (Benefit) [Abstract]
Federal	12,195	17,861	7,216
State and local	468	(2,099)	3,340
Foreign	(19,526)	(37,265)	(31,743)
Total deferred	(6,863)	(21,503)	(21,187)
Change in valuation allowance	88	8,518	3,195
Total provision for income taxes	$ 25,995	$ 4,430	$ 15,974