CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock	Noncontrolling interest in consolidated subsidiaries
Beginning balance at Dec. 26, 2020	$ 1,207,836	$ 27,900	$ 335	$ 2,245,035	$ (309,786)	$ (781,422)	$ 25,774
Increase (Decrease) in Shareholders' Equity
Net earnings	117,658			117,124			534
Other comprehensive income (loss)	26,904				26,351		553
Cash dividends declared	(21,231)			(21,231)
Purchase of treasury shares, shares acquired	(21,600)					(21,600)
Stock plan exercises, shares acquired	(16,922)					(16,922)
Stock options exercised	19,891		(8,100)	(3,913)		31,904
Stock option expense	1,267		1,267
Stock awards	7,681		6,498			1,183
Ending balance at Jun. 26, 2021	1,321,484	27,900	0	2,337,015	(283,435)	(786,857)	26,861
Beginning balance at Mar. 27, 2021	1,250,102	27,900	0	2,282,355	(307,556)	(777,885)	25,288
Increase (Decrease) in Shareholders' Equity
Net earnings	62,657			62,110			547
Other comprehensive income (loss)	25,147				24,121		1,026
Cash dividends declared	(10,606)			(10,606)
Purchase of treasury shares, shares acquired	(10,469)					(10,469)
Stock plan exercises, shares acquired	(197)					(197)
Stock options exercised	573		(3,500)	3,156		917
Stock option expense	619		619
Stock awards	3,658		2,881			777
Ending balance at Jun. 26, 2021	1,321,484	27,900	0	2,337,015	(283,435)	(786,857)	26,861
Beginning balance at Dec. 25, 2021	1,413,597	27,900	1,479	2,394,307	(263,127)	(773,712)	26,750
Increase (Decrease) in Shareholders' Equity
Net earnings	140,113			138,419			1,694
Other comprehensive income (loss)	(25,995)				(25,057)		(938)
Cash dividends declared	(23,464)			(23,464)
Purchase of noncontrolling interest	(4,292)			0			(4,481)
Addition of noncontrolling interest	41,743						41,743
Purchase of treasury shares, shares acquired	(9,776)					(9,776)
Stock plan exercises, shares acquired	(4,205)					(4,205)
Stock options exercised	5,846		(2,087)			7,933
Stock option expense	1,552		1,552
Stock awards	18,031		3,188			14,843
Ending balance at Jun. 25, 2022	1,553,150	27,900	4,321	2,509,262	(288,184)	(764,917)	64,768
Beginning balance at Mar. 26, 2022	1,504,491	27,900	5,251	2,444,897	(232,160)	(769,835)	28,438
Increase (Decrease) in Shareholders' Equity
Net earnings	77,207			76,108			1,099
Other comprehensive income (loss)	(58,055)				(56,024)		(2,031)
Cash dividends declared	(11,743)			(11,743)
Purchase of noncontrolling interest	(4,292)			0			(4,481)
Addition of noncontrolling interest	41,743						41,743
Purchase of treasury shares, shares acquired	(9,776)					(9,776)
Stock plan exercises, shares acquired	(1,678)					(1,678)
Stock options exercised	5,133		(1,551)	0		6,684
Stock option expense	836		836
Stock awards	9,284		(404)			9,688
Ending balance at Jun. 25, 2022	$ 1,553,150	$ 27,900	$ 4,321	$ 2,509,262	$ (288,184)	$ (764,917)	$ 64,768