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Leases (Supplemental Information) (Details)
$ in Thousands
12 Months Ended
Jul. 31, 2020
USD ($)
Leases [Abstract]  
Operating lease assets $ 103,797
Current portion of lease liabilities 10,936
Non-current portion of lease liabilities 119,408
Total lease liability balance $ 130,344
Weighted average remaining lease term (years) 9 years 3 months 7 days
Weighted average discount rate 4.34%
Cash payments for operating leases $ 9,584
Operating lease assets obtained in exchange for lease liabilities $ 23,032
Current lease liabilities, extensible list us-gaap:OtherLiabilitiesCurrent