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STATEMENT OF CASH FLOWS SUPPLEMENTAL INFORMATION - Reconciliation of Cash (Details) - USD ($)
$ in Thousands
Jul. 31, 2020
Jul. 31, 2019
Jul. 31, 2018
Supplemental Cash Flow Elements [Abstract]      
Cash and cash equivalents $ 75,887 $ 32,548  
Funds held for clients 18,755 13,516  
Cash, cash equivalents and restricted cash $ 94,642 $ 46,064 $ 103,826