CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends per share (in dollars per share)	$ 1.80	$ 1.50	$ 1.50
Purchase of treasury shares acquired (in shares)	441,119	491,045	843,278
Stock plan exercises; shares acquired (in shares)	88,411	90,868	27,555
Stock options exercised; shares issued (in shares)	147,014	119,789	63,717
Stock awards; shares issued (in shares)	65,248	60,021	61,208