Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Shares issued under stock incentive plans, net of forfeitures	(154,084)	(488,655)	1,200,527
Shares issued for stock options exercised, net	1,357,841	1,247,064	530,585
Cash dividends declared per share	$ 0.32	$ 0.24	$ 0.24
Issuance of treasury shares	7,761	44,480	57,798
Purchase of common stock for treasury	(5,349,262)	(1,639,732)	(2,838,919)
Purchases of shares under employee stock plans	(219,039)	(227,464)	(283,578)