Consolidated Statements Of Equity (USD $) In Thousands	Common Stock [Member]	Additional Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income [Member]	Non-controlling Interests [Member]	Total
Balance at Dec. 28, 2008	$ 4,274	$ 381,498	$ 178,995	$ (71,520)	$ 16,236	$ 924	$ 510,407
Balance, shares at Dec. 28, 2008	42,748			4,036
Net earnings (loss)			24,112			(447)	23,665
Exercise of stock-based compensation and awards released	33	812					845
Exercise of stock-based compensation and awards released, shares	330
Tax benefit (shortfall) on stock-based compensation		(481)					(481)
Stock-based compensation expense		7,135					7,135
Deferred compensation plan		1,415					1,415
Amortization of pension plan actuarial losses, net of tax					84		84
Change in realized and unrealized gains on derivative hedges, net of tax					(1,182)		(1,182)
Recognized gain on pension, net of tax					1,934		1,934
Foreign currency translation adjustment					11,379	357	11,736
Balance at Dec. 27, 2009	4,307	390,379	203,107	(71,520)	28,451	834	555,558
Balance, shares at Dec. 27, 2009	43,078			4,036
Net earnings (loss)			27,730			(116)	27,614
Exercise of stock-based compensation and awards released	77	5,945					6,022
Exercise of stock-based compensation and awards released, shares	765
Tax benefit (shortfall) on stock-based compensation		133					133
Stock-based compensation expense		8,751					8,751
Deferred compensation plan		2,112					2,112
Repurchase of non-controlling interests		63				(755)	(692)
Amortization of pension plan actuarial losses, net of tax					103		103
Change in realized and unrealized gains on derivative hedges, net of tax					679		679
Recognized gain on pension, net of tax					(3,405)		(3,405)
Foreign currency translation adjustment					(15,358)	37	(15,321)
Balance at Dec. 26, 2010	4,384	407,383	230,837	(71,520)	10,470		581,554
Balance, shares at Dec. 26, 2010	43,843			4,036
Net earnings (loss)			(66,569)			(57)	(66,626)
Exercise of stock-based compensation and awards released	40	2,170					2,210
Exercise of stock-based compensation and awards released, shares	398
Tax benefit (shortfall) on stock-based compensation		77					77
Stock-based compensation expense		7,408					7,408
Deferred compensation plan		1,173					1,173
Non-controlling interests of acquired entities						1,271	1,271
Amortization of pension plan actuarial losses, net of tax					137		137
Change in realized and unrealized gains on derivative hedges, net of tax					1,165		1,165
Recognized gain on pension, net of tax					(2,571)		(2,571)
Foreign currency translation adjustment					3,540	2	3,542
Balance at Dec. 25, 2011	$ 4,424	$ 418,211	$ 164,268	$ (71,520)	$ 12,741	$ 1,216	$ 529,340
Balance, shares at Dec. 25, 2011	44,241			4,036