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, 2015	$ 965,211	$ 27,900	$ 0	$ 1,729,679	$ (267,218)	$ (571,920)	$ 46,770
Increase (Decrease) in Shareholders' Equity
Net earnings	178,391			173,232			5,159
Other comprehensive income (loss)	(78,156)				(79,141)		985
Cash dividends declared	(33,921)			(33,921)
Dividends to noncontrolling interests	(2,938)						(2,938)
Purchase of noncontrolling interest	(11,009)		(137)				(10,872)
Purchase of treasury shares	(53,800)					(53,800)
Stock plan exercises	(2,305)					(2,305)
Stock options exercised	11,153		(7,614)	5,732		13,035
Stock option expense	5,782		5,782
Stock awards	4,178		1,969			2,209
Ending balance at Dec. 31, 2016	982,586	27,900	0	1,874,722	(346,359)	(612,781)	39,104
Increase (Decrease) in Shareholders' Equity
Net earnings	122,319			116,240			6,079
Other comprehensive income (loss)	66,787				67,337		(550)
Cash dividends declared	(33,927)			(33,927)
Dividends to noncontrolling interests	(5,674)						(5,674)
Stock plan exercises	(26,161)					(26,161)
Stock options exercised	35,159		(4,666)	(2,691)		42,516
Stock option expense	5,137		5,137
Stock awards	5,569		(471)			6,040
Ending balance at Dec. 30, 2017	1,151,795	27,900	0	1,954,344	(279,022)	(590,386)	38,959
Increase (Decrease) in Shareholders' Equity
Cumulative impact of accounting standard updates | Impact of ASU 2016-16 adoption				1,038
Net earnings	100,306			94,351			5,955
Other comprehensive income (loss)	(21,534)				(24,163)		2,629
Cash dividends declared	(33,426)			(33,426)
Dividends to noncontrolling interests	(7,055)						(7,055)
Purchase of noncontrolling interest	(5,510)		0				(5,510)
Addition of noncontrolling interest	40,783						40,783
Purchase of treasury shares	(114,805)					(114,805)
Stock plan exercises	(3,589)					(3,589)
Stock options exercised	7,357		(2,397)	1,518		8,236
Stock option expense	4,064		4,064
Stock awards	6,328		(1,667)			7,995
Ending balance at Dec. 29, 2018	$ 1,135,523	$ 27,900	$ 0	$ 2,027,596	$ (303,185)	$ (692,549)	$ 75,761