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)
Beginning Balance (shares) at Dec. 28, 2014		45,840			4,036
Beginning 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	(26,215)			(26,215)
Exercise of stock-based compensation and awards released (shares)		463
Exercise of stock-based compensation and awards released	433	$ 46	387
Tax benefit on stock-based compensation	(295)		(295)
Stock-based compensation expense	5,480		5,480
Deferred compensation plan	1,019		1,019
Change in realized and unrealized losses on derivative hedges, net of tax	(125)					(125)
Dividend declared ($0.50 per share)	(21,384)		(21,384)
Repurchase of common stock (shares)					889
Repurchase of common stock	(6,634)				$ (6,634)
Pension liability adjustments	16,804					16,804
Other postretirement benefit adjustments	(1,014)					(1,014)
Foreign currency translation adjustment	(21,208)					(21,208)
Ending Balance (shares) at Dec. 27, 2015		46,303			4,925
Ending Balance at Dec. 27, 2015	274,792	$ 4,630	427,089	(38,546)	$ (78,154)	(40,227)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(32,521)			(32,521)
Exercise of stock-based compensation and awards released (shares)		255
Exercise of stock-based compensation and awards released	(1)	$ 26	(27)
Tax benefit on stock-based compensation	(76)		(76)
Stock-based compensation expense	1,099		1,099
Deferred compensation plan	179		179
Change in realized and unrealized losses on derivative hedges, net of tax	(311)					(311)
Pension liability adjustments	(21)					(21)
Other postretirement benefit adjustments	28					28
Foreign currency translation adjustment	2,192					2,192
Ending Balance (shares) at Mar. 27, 2016		46,558			4,925
Ending Balance at Mar. 27, 2016	$ 245,360	$ 4,656	$ 428,264	$ (71,067)	$ (78,154)	$ (38,339)