Income Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Summary of income tax reconciliation
Provision computed at federal statutory income tax rate	$ 83,003	$ 93,659	$ 63,350
State and local income tax, net of federal tax effect	5,534	3,621	1,168
Foreign income tax rate differential	(36,098)	(56,873)	(39,012)
Stock-based compensation	(13,132)	2,687	5,726
Change in deferred tax valuation allowance	1,243	(11,066)	10,065
Tax credits	(39,765)	(19,243)	(17,331)
Repatriation of foreign earnings	25,145	50	(2,910)
Non-deductible research and development expense	0	336	2,195
Tax effects of intra-entity transfer of assets	(7,661)	(7,928)	(5,397)
Domestic production activity deduction	(2,826)	0	(1,281)
Withholding taxes	9,870	5,119	4,064
Tax settlements, foreign	5,620	0	0
Interest and penalties not included in tax settlements	451	331	(382)
Increase in unrecognized tax benefits not included in tax settlements	614	3,530	157
Other	2,069	956	1,692
Total provision for income taxes	$ 34,067	$ 15,179	$ 22,104
Effective tax rate	14.00%	6.00%	12.00%