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SIGNIFICANT ACCOUNTING POLICIES (Details 6) - USD ($)
$ in Thousands
Jul. 28, 2018
Jul. 29, 2017
Carrying Value    
Assets:    
Cash and cash equivalents $ 23,315 $ 15,414
Accounts receivable 579,702 525,636
Notes receivable 1,930 2,359
Liabilities:    
Accounts payable 517,125 534,616
Notes payable 210,000 223,612
Long-term debt, including current portion 150,150 161,991
Fair Value    
Assets:    
Cash and cash equivalents 23,315 15,414
Accounts receivable 579,702 525,636
Notes receivable 1,930 2,359
Liabilities:    
Accounts payable 517,125 534,616
Notes payable 210,000 223,612
Long-term debt, including current portion $ 155,317 $ 169,058