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OPERATING SEGMENTS Largest Customer (Details) - Customer, Walmart
12 Months Ended
Jul. 31, 2018
Jul. 31, 2017
Net sales for the years ended July 31    
Revenue, Major customer    
Concentration risk, percentage 18.00% 20.00%
Net accounts receivable as of July 31    
Revenue, Major customer    
Concentration risk, percentage 26.00% 28.00%