Condensed Consolidated Statements Of Equity (USD $) In Thousands	Total	Common stock	Additional paid-in capital	Retained deficit	Foreign currency translation adjustments [Member]	Defined benefit pension adjustments [Member]
Balance at Dec. 31, 2012	$ 694,799	$ 1,385	$ 809,514	$ (157,038)	$ 41,997	$ (1,059)
Balance (in shares) at Dec. 31, 2012		138,458
Shares issued under stock plans (in shares)		1,418
Shares issued under stock plans	4,873	14	4,859	0	0	0
Repurchase and retirement of common stock (shares)		(388)
Repurchase and retirement of common stock	(3,777)	(4)	(2,265)	(1,508)	0	0
Share-based compensation expense	1,688	0	1,688	0	0	0
Tax benefit associated with stock plans	740	0	740	0	0	0
Pension liability adjustments, net of tax	43	0	0	0	0	43
Foreign currency translation	(11,596)	0	0	0	(11,596)	0
Net income	16,397	0	0	16,397	0	0
Balance at Mar. 30, 2013	703,167	1,395	814,536	(142,149)	30,401	(1,016)
Balance (in shares) at Mar. 30, 2013		139,488
Balance at Dec. 31, 2013	756,843	1,387	819,632	(88,599)	25,280	(857)
Balance (in shares) at Dec. 31, 2013		138,734
Shares issued under stock plans, net of shares withheld for employee taxes (shares)		434
Shares issued under stock plans, net of shares withheld for employee taxes	(1,989)	5	(1,994)	0	0	0
Share-based compensation expense	1,877	0	1,877	0	0	0
Tax benefit associated with stock plans	244	0	244	0	0	0
Pension liability adjustments, net of tax	22	0	0	0	0	22
Foreign currency translation	484	0	0	0	484	0
Net income	14,312	0	0	14,312		0
Balance at Mar. 29, 2014	$ 771,793	$ 1,392	$ 819,759	$ (74,287)	$ 25,764	$ (835)
Balance (in shares) at Mar. 29, 2014		139,168