Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Shares issued under stock incentive plans, net of forfeitures	1,200,527	721,621	795,523
Shares issued for stock options exercised, net	530,585	941,157	639,655
Cash dividends declared per share	$ 0.24	$ 0.24	$ 0.24
Issuance of treasury shares	57,798	40,016	35,484
Purchase of common stock for treasury	(2,838,919)	(4,804,665)	0
Purchases of shares under employee stock plans	(283,578)	(276,275)	(379,782)