Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Net income	$ 13,791	$ 10,453	$ 30,367	$ 25,803
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	454	(505)	590	(510)
Unrealized (losses) gains on available-for- sale investment securities arising during the period, net of tax	(32)	(1)	4	84
Comprehensive income	$ 14,213	$ 9,947	$ 30,961	$ 25,377