CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock	Noncontrolling interest in consolidated subsidiaries
Balance at Dec. 31, 2011	$ 1,197,911	$ 27,900		$ 1,079,698	$ 64,052	$ (24,688)	$ 50,949
Increase (Decrease) in Shareholders' Equity
Net earnings	52,588			52,325			263
Other comprehensive income (loss)	31,533				26,782		4,751
Cash dividends declared	(4,778)			(4,778)
Dividends to noncontrolling interests	(431)						(431)
Stock plan exercises; 77,955 and 69,376 shares acquired for the period ended March 30, 2013 and March 31, 2012, respectively	(7,747)					(7,747)
Stock options exercised; 156,342 and 133,510 shares issued for the period ended March 30, 2013 and March 31, 2012, respectively	8,230		(3,605)	3,410		8,425
Tax benefit from stock option exercises	2,134		2,134
Stock option expense	1,245		1,245
Stock awards; 2,667 and 402 shares issued for the period ended March 30, 2013 and March 31, 2012, respectively	318		226			92
Balance at Mar. 31, 2012	1,281,003	27,900		1,130,655	90,834	(23,918)	55,532
Balance at Dec. 29, 2012	1,407,010	27,900		1,300,529	43,938	(22,455)	57,098
Increase (Decrease) in Shareholders' Equity
Net earnings	78,140			77,569			571
Other comprehensive income (loss)	(15,650)				(13,439)		(2,211)
Cash dividends declared	(6,020)			(6,020)
Dividends to noncontrolling interests	(1,476)						(1,476)
Acquisition of Locker	325						325
Stock plan exercises; 77,955 and 69,376 shares acquired for the period ended March 30, 2013 and March 31, 2012, respectively	(12,375)					(12,375)
Stock options exercised; 156,342 and 133,510 shares issued for the period ended March 30, 2013 and March 31, 2012, respectively	11,697		(1,901)	659		12,939
Tax benefit from stock option exercises	226		226
Stock option expense	1,313		1,313
Stock awards; 2,667 and 402 shares issued for the period ended March 30, 2013 and March 31, 2012, respectively	735		362			373
Balance at Mar. 30, 2013	$ 1,463,925	$ 27,900		$ 1,372,737	$ 30,499	$ (21,518)	$ 54,307