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. 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 ($1.50 per share)	(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
Net earnings	100,306			94,351			5,955
Other comprehensive income (loss)	(21,534)				(24,163)		2,629
Cash dividends declared ($1.50 per share)	(33,426)			(33,426)
Dividends to noncontrolling interests	(7,055)						(7,055)
Stock plan exercises	(3,589)					(3,589)
Stock options exercised	7,357		(2,397)	1,518		8,236
Purchase of noncontrolling interest	(5,510)		0				(5,510)
Stock option expense	4,064		4,064
Stock awards	6,328		(1,667)			7,995
Addition of noncontrolling interest	40,783						40,783
Purchase of treasury shares	(114,805)					(114,805)
Ending balance at Dec. 29, 2018	1,135,523	27,900	0	2,027,596	(303,185)	(692,549)	75,761
Increase (Decrease) in Shareholders' Equity
Net earnings	159,466			153,769			5,697
Other comprehensive income (loss)	(10,429)				(10,237)		(192)
Cash dividends declared ($1.50 per share)	(32,503)			(32,503)
Dividends to noncontrolling interests	(7,737)						(7,737)
Stock plan exercises	(12,989)					(12,989)
Stock options exercised	13,619		(3,756)	972		16,403
Purchase of noncontrolling interest	(27,845)		277				(28,122)
Stock option expense	2,772		2,772
Stock awards	8,815		707			8,108
Purchase of treasury shares	(62,915)					(62,915)
Ending balance at Dec. 28, 2019	$ 1,156,891	$ 27,900	$ 0	$ 2,140,948	$ (313,422)	$ (743,942)	$ 45,407