Condensed Consolidated Stockholders' Equity Statement (Unaudited) (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss), Translation Component of Equity	Accumulated Other Comprehensive Income (Loss), Pension and Postretirement Liability
Beginning balance at Dec. 31, 2011	$ 694,549	$ 503	$ 601,484	$ 276,363	$ (161,092)	$ 27,463	$ (50,172)
Beginning balance, shares at Dec. 31, 2011		50,335			4,510
Net income	66,665			66,665
Foreign currency translation	(17,612)					(17,612)
Comprehensive income	49,053
Exercise of stock options, net of tax withholding forfeitures	1,015		(6,785)		7,800
Exercise of stock options, net of tax withholding forfeitures, shares					210
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(2,456)		(11,103)		8,647
Conversion of restricted stock units into common stock, net of tax withholding forfeitures, shares					172
Share repurchase program	(50,000)				(50,000)
Share repurchase program, shares	(1,400,000)				(1,417)
Share-based compensation	10,248		10,248
Dividends ($0.10 per share)	(4,609)			(4,609)
Ending balance at Jul. 01, 2012	$ 697,800	$ 503	$ 593,844	$ 338,419	$ (194,645)	$ 9,851	$ (50,172)
Ending balance, shares at Jul. 01, 2012		50,335			(5,545)