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Balance Sheet Components (Future Amortization) (Details) - USD ($)
$ in Thousands
Jul. 31, 2020
Jul. 31, 2019
Balance Sheet Related Disclosures [Abstract]    
2021 $ 19,965  
2022 11,143  
2023 3,799  
2024 2,379  
2025 1,938  
Thereafter 484  
Total future amortization expense $ 39,708 $ 66,542