Selected Quarterly Financial Data (Unaudited) (Details) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
	Oct. 30, 2017	Dec. 31, 2018 USD ($) $ / shares	Sep. 30, 2018 USD ($) $ / shares	Jul. 01, 2018 USD ($) $ / shares	Apr. 01, 2018 USD ($) $ / shares	Dec. 31, 2017 USD ($) $ / shares	Oct. 01, 2017 USD ($) $ / shares	Jul. 02, 2017 USD ($) $ / shares	Apr. 02, 2017 USD ($) $ / shares	Dec. 31, 2019 USD ($) $ / shares	Dec. 31, 2018 USD ($) $ / shares	Dec. 31, 2017 USD ($) $ / shares
Quarterly Financial Information Disclosure [Abstract]
Revenue		$ 169,769	$ 183,325	$ 199,047	$ 173,484	$ 193,286	$ 232,221	$ 211,264	$ 169,567	$ 725,625	$ 806,338	$ 766,083
Gross margin		124,898	135,693	148,080	127,200	140,461	173,361	157,095	129,369	535,871	600,286	578,794
Operating income		17,607	43,092	51,756	30,147	45,247	77,844	63,455	34,596	142,602	221,142	258,861
Net income		$ 80,327	$ 41,685	$ 48,749	$ 33,104	$ 45,418	$ 80,436	$ 56,196	$ 37,217	$ 203,865	$ 219,267	$ 176,712
Basic net income (loss) per share (in dollars per share) | $ / shares		$ 0.47	$ 0.24	$ 0.28	$ 0.19	$ 0.26	$ 0.47	$ 0.33	$ 0.21	$ 1.19	$ 1.27	$ 1.02
Diluted net income (loss) per share (in dollars per share) | $ / shares		$ 0.46	$ 0.24	$ 0.28	$ 0.19	$ 0.26	$ 0.45	$ 0.32	$ 0.21	$ 1.16	$ 1.24	$ 0.98
Stock split	2					2