CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Net Income (Loss) Attributable to Parent [Abstract]
Net income	$ 50,434	$ 57,763	$ 15,401
Other comprehensive income (loss)
Foreign currency translation adjustments	98	(137)	43
Total comprehensive income	$ 50,532	$ 57,626	$ 15,444