Income Taxes Income Tax Expense Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%	35.00%	35.00%
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	$ 14,790	$ 27,910	$ 19,750
Income Tax Reconciliation, State and Local Income Taxes	730	2,440	650
Income Tax Reconciliation, Foreign Income Tax Rate Differential	(4,920)	(2,250)	(1,720)
Income Tax Reconciliation, Tax Contingencies	(1,320)	(700)	(270)
Income Tax Reconciliation, Tax Holidays	(1,160)	0	0
Income Tax Reconciliation, Nondeductible Expense, Restructuring Charges (Benefits)	(2,400)	1,300	0
Income Tax Reconciliation, Noncontrolling Interest Income (Expense)	(790)	0	0
Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance	1,600	130	(1,300)
Income Tax Reconciliation, Other Adjustments	(560)	100	390
Income Tax Expense (Benefit), Continuing Operations	$ 5,970	$ 28,930	$ 17,500