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Leases (Details) - Schedule of Lease Cost - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Apr. 30, 2020
Apr. 30, 2020
Schedule of Lease Cost [Abstract]    
Operating lease cost $ 1,466 $ 4,414
Finance lease cost:    
Amortization of leased assets 61 177
Interest on lease liabilities 7 29
Total lease cost $ 1,534 $ 4,620