Consolidated Statements Of Equity (USD $) In Thousands	Total	Common Stock	Additional Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income	Non-controlling Interests
Beginning balance at Dec. 25, 2011	$ 508,645	$ 4,424	$ 418,211	$ 142,094	$ (71,520)	$ 14,220	$ 1,216
Beginning balance (in shares) at Dec. 25, 2011		44,241			4,036
Net earnings	(146,979)			(146,450)			(529)
Exercise of stock-based compensation and awards released (in shares)		522
Exercise of stock-based compensation and awards released	1,160	52	1,108
Tax benefit on stock-based compensation	(306)		(306)
Stock-based compensation expense	4,837		4,837
Deferred compensation plan	865		865
Amortization of pension plan actuarial losses, net of tax	218					218
Change in realized and unrealized loss on derivative hedges, net of tax	(1,521)					(1,521)
Recognized loss on pension, net of tax	(12,797)					(12,797)
Prior service cost arising during period, net of tax benefit of $77, $0, and $0	0
Foreign currency translation adjustment	187					186	1
Ending balance at Dec. 30, 2012	354,309	4,476	424,715	(4,356)	(71,520)	306	688
Ending balance (in shares) at Dec. 30, 2012		44,763			4,036
Net earnings	(18,927)			(18,928)			1
Exercise of stock-based compensation and awards released (in shares)		721
Exercise of stock-based compensation and awards released	2,561	72	2,489
Tax benefit on stock-based compensation	82		82
Stock-based compensation expense	6,369		6,369
Deferred compensation plan	681		681
Sale of interest in subsidiary	(516)						(516)
Amortization of pension plan actuarial losses, net of tax	1,120					1,120
Change in realized and unrealized loss on derivative hedges, net of tax	(21)					(21)
Recognized loss on pension, net of tax	1,403					1,403
Prior service cost arising during period, net of tax benefit of $77, $0, and $0	(158)					(158)
Foreign currency translation adjustment	(578)					(405)	(173)
Ending balance at Dec. 29, 2013	346,325	4,548	434,336	(23,284)	(71,520)	2,245	0
Ending balance (in shares) at Dec. 29, 2013		45,484			4,036
Net earnings	10,953			10,953			0
Exercise of stock-based compensation and awards released (in 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
Amortization of pension plan actuarial losses, net of tax	1,501					1,501
Change in realized and unrealized loss on derivative hedges, net of tax	0
Recognized loss on pension, net of tax	(22,334)					(22,334)
Prior service cost arising during period, net of tax benefit of $77, $0, and $0	(229)					(229)
Foreign currency translation adjustment	(15,867)					(15,867)
Ending balance at Dec. 28, 2014	$ 327,931	$ 4,584	$ 441,882	$ (12,331)	$ (71,520)	$ (34,684)	$ 0
Ending balance (in shares) at Dec. 28, 2014		45,840			4,036