Leases - Assets and Liabilities (Details) - USD ($) $ in Thousands	Oct. 31, 2020	Jul. 31, 2020
Leases [Abstract]
Operating lease right-of-use assets	$ 34,078	$ 33,609
Operating lease liabilities
Other current liabilities	5,794	5,343
Other long-term liabilities	28,496	28,456
Total operating lease liabilities	34,290	33,799
Finance lease right-of-use assets	3,536	3,672
Finance lease liabilities
Other current liabilities	523	505
Other long-term liabilities	4,606	4,743
Total finance lease liabilities	$ 5,129	$ 5,248
Weighted-aver remaining lease term - operating leases	13 years 1 month 6 days	13 years 7 months 6 days
Weighted-aver remaining lease term - finance leases	6 years 7 months 6 days	6 years 9 months 18 days
Weighted-average discount rate - operating leases	3.40%	3.40%
Weighted-average discount rate - finance leases	9.70%	9.70%