Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Shares issued under stock incentive plans, net of forfeitures	38,655	(154,084)	(488,655)
Shares issued for stock options exercised, net	681,389	1,357,841	1,247,064
Cash dividends declared per share	$ 0.40	$ 0.32	$ 0.24
Issuance of treasury shares	7,460	7,761	44,480
Purchases of shares under employee stock plans	10,914,965	5,349,262	1,639,732
Shares Paid for Tax Withholding for Share Based Compensation	368,326	219,039	227,464