CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 29, 2017	Apr. 23, 2016	Apr. 29, 2017	Apr. 23, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 38,796	$ 33,083	$ 113,509	$ 79,380
Foreign currency translation (losses) gains, net of tax	(165)	447	(145)	91
Comprehensive income	$ 38,631	$ 33,530	$ 113,364	$ 79,471