Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 204,101	$ 203,086	$ 252,417
Other comprehensive income (loss), net of tax effects:
Foreign currency translation adjustments	19,394	(12,801)	(25,276)
Changes in unrealized holding gains or losses on available-for-sale securities, net of reclassification adjustments for realized gains and losses	1,712	716	169
Changes in defined benefit plan liabilities	424	(650)	335
Total other comprehensive income (loss), net of tax effects	21,530	(12,735)	(24,772)
Comprehensive income	$ 225,631	$ 190,351	$ 227,645