Consolidated Statements of Equity (USD $) In Thousands	Common Stock [Member]	Additional Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income [Member]	Noncontrolling Interests [Member]	Total
Balance at Dec. 27, 2009	$ 4,307	$ 390,379	$ 205,951	$ (71,520)	$ 28,603	$ 834	$ 558,554
Balance, shares at Dec. 27, 2009	43,078			4,036
Net earnings			27,371			(116)	27,255
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 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 (gains), net of tax					103		103
Change in realized and unrealized gains (losses) on derivative hedges, net of tax					679		679
Recognized loss on pension, net of tax					(3,405)		(3,405)
Foreign currency translation adjustment					(15,258)	37	(15,221)
Balance at Dec. 26, 2010	4,384	407,383	233,322	(71,520)	10,722		584,291
Balance, shares at Dec. 26, 2010	43,843			4,036
Net earnings			209			2	211
Exercise of stock-based compensation and awards released	29	1,540					1,569
Exercise of stock-based compensation and awards released, shares	289
Tax benefit on stock-based compensation		90					90
Stock-based compensation expense		4,779					4,779
Deferred compensation plan		351					351
Non-controlling interests of acquired entities						1,271	1,271
Amortization of pension plan actuarial losses (gains), net of tax					(244)		(244)
Change in realized and unrealized gains (losses) on derivative hedges, net of tax					(1,762)		(1,762)
Foreign currency translation adjustment					22,085		22,085
Balance at Jun. 26, 2011	$ 4,413	$ 414,143	$ 233,531	$ (71,520)	$ 30,801	$ 1,273	$ 612,641
Balance, shares at Jun. 26, 2011	44,132			4,036