INCOME TAXES - Components of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 25, 2015
Federal:
Current	$ 10,018	$ 13,150	$ 2,424
Deferred	2,167	183	13,954
State:
Current	3,906	4,215	(6,490)
Deferred	111	(253)	887
Income taxes	$ 16,202	$ 17,295	$ 10,775