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LEASES - Rent Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Jul. 29, 2017
Jul. 30, 2016
Jul. 25, 2015
Leases [Abstract]      
Minimum rentals $ 11,153 $ 11,585 $ 11,090
Contingent rentals 668 929 893
Total rental expense $ 11,821 $ 12,514 $ 11,983