CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 21,302	$ 17,030	$ 45,692	$ 32,594
Other comprehensive loss
Foreign currency translation adjustments	(95)	(2)	(35)	(59)
Total comprehensive income	$ 21,207	$ 17,028	$ 45,657	$ 32,535