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Operating Leases - Schedule of Lease Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jan. 31, 2020
Jan. 31, 2020
Lessee, Lease, Description [Line Items]    
Operating lease $ 3,263 $ 6,215
Short-term lease cost 610 1,051
Variable lease cost 853 1,552
Total operating lease costs 4,726 8,818
Real Estate Arrangements    
Lessee, Lease, Description [Line Items]    
Operating lease 1,165 2,333
Short-term lease cost 347 626
Variable lease cost 401 613
Total operating lease costs 1,913 3,572
Co-Location Arrangements    
Lessee, Lease, Description [Line Items]    
Operating lease 2,098 3,882
Short-term lease cost 263 425
Variable lease cost 452 939
Total operating lease costs $ 2,813 $ 5,246