CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 27, 2019	Jul. 28, 2018	Jul. 27, 2019	Jul. 28, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 29,896	$ 29,900	$ 44,175	$ 47,131
Foreign currency translation gains (losses), net of tax	11	(33)	(3)	(121)
Comprehensive income	$ 29,907	$ 29,867	$ 44,172	$ 47,010