Consolidated Statements Of Equity (USD $) In Thousands	Total	Common Stock [Member]	Additional Capital [Member]	Retained Earnings	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interests
Balance at Dec. 26, 2010 (As Previously Reported)	$ 581,554	$ 4,384	$ 407,383	$ 230,837	$ (71,520)	$ 10,470	$ 0
Balance (Restatement Adjustments)	(4,840)			(5,239)		399
Balance at Dec. 26, 2010	576,714	4,384	407,383	225,598	(71,520)	10,869	0
Balance, shares at Dec. 26, 2010 (As Previously Reported)		43,843			4,036
Balance, shares at Dec. 26, 2010		43,843			4,036
Net loss (earnings)	(83,561)			(83,504)			(57)
Net loss (earnings) at Dec. 27, 2010 (As Previously Reported)	(66,626)			(66,569)
Net loss (earnings) (Restatement Adjustments)	(16,935)
Exercise of stock-based compensation and awards released	2,210	40	2,170
Exercise of stock-based compensation and awards released at Dec. 27, 2010 (As Previously Reported)	2,210
Exercise of stock-based compensation and awards released, in shares		398
Tax benefit on stock-based compensation	77		77
Tax benefit on stock-based compensation at Dec. 27, 2010 (As Previously Reported)	77
Stock-based compensation expense	7,408		7,408
Stock-based compensation expense at Dec. 27, 2010 (As Previously Reported)	7,408
Deferred compensation plan	1,173		1,173
Deferred compensation plan at Dec. 27, 2010 (As Previously Reported)	1,173
Non-controlling interest of acquired entities	1,271						1,271
Non-controlling interest of acquired entities at Dec. 27, 2010 (As Previously Reported)	1,271
Amortization of pension plan actuarial losses, net of tax	137					137
Amortization of pension plan actuarial losses, net of tax at Dec. 27, 2010 (As Previously Reported)	137					137
Amortization of pension plan actuarial losses, net of tax (Restatement Adjustments)	0
Change in realized and unrealized losses on derivative hedges, net of tax	1,165					1,165
Change in realized and unrealized losses on derivative hedges, net of tax at Dec. 27, 2010 (As Previously Reported)	1,165					1,165
Change in realized and unrealized losses on derivative hedges, net of tax (Restatement Adjustments)	0
Recognized loss on pension, net of tax	(2,571)					(2,571)
Recognized loss on pension, net of tax at Dec. 27, 2010 (As Previously Reported)	(2,571)					(2,571)
Recognized loss on pension, net of tax (Restatement Adjustments)	0
Prior service cost arising during period, net of tax	0
Foreign currency translation adjustment (As Restated)	4,622					4,620	2
Foreign currency translation adjustment (As Restated) at Dec. 27, 2010 (As Previously Reported)	3,542					3,540
Balance at Dec. 25, 2011 (As Previously Reported)	529,340			164,268		12,741
Balance at Dec. 25, 2011	508,645	4,424	418,211	142,094	(71,520)	14,220	1,216
Balance, shares at Dec. 25, 2011		44,241			4,036
Net loss (earnings)	(146,979)			(146,450)			(529)
Net loss (earnings) at Dec. 26, 2011 (As Previously Reported)	(146,405)			(145,876)
Net loss (earnings) (Restatement Adjustments)	(574)
Exercise of stock-based compensation and awards released	1,160	52	1,108
Exercise of stock-based compensation and awards released at Dec. 26, 2011 (As Previously Reported)	1,160
Exercise of stock-based compensation and awards released, in shares		522
Tax benefit on stock-based compensation	(306)		(306)
Tax benefit on stock-based compensation at Dec. 26, 2011 (As Previously Reported)	(306)
Stock-based compensation expense	4,837		4,837
Stock-based compensation expense at Dec. 26, 2011 (As Previously Reported)	4,837
Deferred compensation plan	865		865
Deferred compensation plan at Dec. 26, 2011 (As Previously Reported)	865
Amortization of pension plan actuarial losses, net of tax	218					218
Amortization of pension plan actuarial losses, net of tax at Dec. 26, 2011 (As Previously Reported)	218					218
Amortization of pension plan actuarial losses, net of tax (Restatement Adjustments)	0
Change in realized and unrealized losses on derivative hedges, net of tax	(1,521)					(1,521)
Change in realized and unrealized losses on derivative hedges, net of tax at Dec. 26, 2011 (As Previously Reported)	(1,521)					(1,521)
Change in realized and unrealized losses on derivative hedges, net of tax (Restatement Adjustments)	0
Recognized loss on pension, net of tax	(12,797)					(12,797)
Recognized loss on pension, net of tax at Dec. 26, 2011 (As Previously Reported)	(11,176)					(11,176)
Recognized loss on pension, net of tax (Restatement Adjustments)	(1,621)
Prior service cost arising during period, net of tax	0
Foreign currency translation adjustment (As Restated)	187					186	1
Foreign currency translation adjustment (As Restated) at Dec. 26, 2011 (As Previously Reported)	534					533
Balance at Dec. 30, 2012 (As Previously Reported)	377,546			18,392		795
Balance (Restatement Adjustments)	(23,237)
Balance at Dec. 30, 2012	354,309	4,476	424,715	(4,356)	(71,520)	306	688
Balance, shares at Dec. 30, 2012		44,763			4,036
Net loss (earnings)	(18,927)			(18,928)			1
Exercise of stock-based compensation and awards released	2,561	72	2,489
Exercise of stock-based compensation and awards released, in shares		721
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)
Amortization of pension plan actuarial losses, net of tax	1,120					1,120
Change in realized and unrealized losses 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	158					158
Foreign currency translation adjustment (As Restated)	(578)					(405)	(173)
Balance at Dec. 29, 2013	$ 346,325	$ 4,548	$ 434,336	$ (23,284)	$ (71,520)	$ 2,245	$ 0
Balance, shares at Dec. 29, 2013		45,484			4,036