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SIGNIFICANT ACCOUNTING POLICIES (Details 5) - Net Sales - Customer Concentration
12 Months Ended
Jul. 29, 2017
Jul. 30, 2016
Aug. 01, 2015
Low      
Concentration of Credit Risk      
Threshold percentage to qualify as major customer 10.00%    
Whole Foods Market      
Concentration of Credit Risk      
Sales to major customer (as a percent) 33.00% 35.00% 34.00%