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. 28, 2013	$ 1,544,846	$ 27,900	$ 0	$ 1,562,670	$ (47,685)	$ (20,860)	$ 22,821
Increase (Decrease) in Shareholders' Equity
Net earnings	189,318			183,976			5,342
Other comprehensive income (loss)	(89,570)				(86,748)		(2,822)
Cash dividends declared	35,036			35,036
Dividends to noncontrolling interests	(2,919)						(2,919)
Acquisition of DS SM	9,309		0				9,309
Acquisition of AgSense	16,333						16,333
Acquisition	508						508
Purchase of treasury shares	(395,045)					(395,045)
Stock plan exercises	(15,403)					(15,403)
Stock options exercised	14,572		(10,994)	7,052		18,514
Tax benefit from stock option exercises	4,264		4,264
Stock option expense	4,461		4,461
Stock awards	4,767		2,269			2,498
Ending balance at Dec. 27, 2014	1,250,405	27,900	0	1,718,662	(134,433)	(410,296)	48,572
Increase (Decrease) in Shareholders' Equity
Net earnings	45,333			40,117			5,216
Other comprehensive income (loss)	(137,169)				(132,785)		(4,384)
Cash dividends declared	34,816			34,816
Dividends to noncontrolling interests	(2,634)						(2,634)
Purchase of treasury shares	(168,983)					(168,983)
Stock plan exercises	(13,854)					(13,854)
Stock options exercised	13,075		(12,895)	5,716		20,254
Tax benefit from stock option exercises	1,699		1,699
Stock option expense	5,137		5,137
Stock awards	7,018		6,059			959
Ending 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)
Acquisition of DS SM	(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