CONDENSED CONSOLIDATED STOCKHOLDERS' EQUITY STATEMENT (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Component [Member]	Accumulated Other Comprehensive Income (Loss), Pension and Postretirement Benefit Plans [Member]
Beginning balance at Dec. 31, 2012	$ 811,860	$ 503	$ 598,180	$ 461,756	$ (218,014)	$ 28,516	$ (59,081)
Beginning balance, shares at Dec. 31, 2012		50,335			(6,167)
Net income	80,805			80,805
Foreign currency translation	(10,733)					(10,733)
Amortization of pension and other postretirement benefit plan losses, net of $2.2 million tax	3,546						3,546
Exercise of stock options, net of tax withholding, shares					865
Exercise of stock options, net of tax withholding	561		(29,997)		30,558
Conversion of restricted stock units into common stock, net of tax withholding, shares					120
Conversion of restricted stock units into common stock, net of tax withholding	(2,815)		(7,012)		4,197
Share repurchase program	(93,750)				(93,750)
Share repurchase program, shares					(1,712)
Share-based compensation	21,707		21,707
Dividends ($0.15 per share)	(6,663)			(6,663)
Ending balance at Sep. 29, 2013	$ 804,518	$ 503	$ 582,878	$ 535,898	$ (277,009)	$ 17,783	$ (55,535)
Ending balance, shares at Sep. 29, 2013		50,335			(6,894)