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DEBT - Schedule of Long-term Debt (Details) - USD ($)
$ in Thousands
Jul. 25, 2020
Jul. 27, 2019
Debt Instrument [Line Items]    
Total debt, excluding obligations under leases $ 80,615 $ 6,169
Less current portion 6,421 0
Total long-term debt, excluding obligations under leases 74,194 6,169
Line of Credit | Revolving Credit Facility    
Debt Instrument [Line Items]    
Total debt, excluding obligations under leases 50,000 0
Line of Credit | Medium-term Notes    
Debt Instrument [Line Items]    
Total debt, excluding obligations under leases 24,694 0
New Market Tax Credit Financing    
Debt Instrument [Line Items]    
Total debt, excluding obligations under leases $ 5,921 $ 6,169