Consolidated Statements Of Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Capital	Accumulated Deficit	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Balance (shares) at Dec. 29, 2013		45,484			4,036
Balance at Dec. 29, 2013	$ 346,325	$ 4,548	$ 434,336	$ (23,284)	$ (71,520)	$ 2,245
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) earnings	10,953			10,953
Exercise of stock-based compensation and awards released (shares)		356
Exercise of stock-based compensation and awards released	943	$ 36	907
Tax benefit on stock-based compensation	(14)		(14)
Stock-based compensation expense	5,781		5,781
Deferred compensation plan	872		872
Pension liability adjustments	(17,263)					(17,263)
Foreign currency translation adjustment	(19,666)					(19,666)
Balance (shares) at Dec. 28, 2014		45,840			4,036
Balance at Dec. 28, 2014	327,931	$ 4,584	441,882	(12,331)	$ (71,520)	(34,684)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) earnings	(16,042)			(16,042)
Exercise of stock-based compensation and awards released (shares)		357
Exercise of stock-based compensation and awards released	(52)	$ 36	(88)
Tax benefit on stock-based compensation	(275)		(275)
Stock-based compensation expense	4,116		4,116
Deferred compensation plan	947		947
Dividend declared	$ (21,384)		(21,384)
Repurchase of common stock (shares)	439				439
Repurchase of common stock	$ (3,410)				$ (3,410)
Pension liability adjustments	5,053					5,053
Foreign currency translation adjustment	(21,458)					(21,458)
Balance (shares) at Sep. 27, 2015		46,197			4,475
Balance at Sep. 27, 2015	$ 275,426	$ 4,620	$ 425,198	$ (28,373)	$ (74,930)	$ (51,089)