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Leases - Remaining operating lease payments (Details)
$ in Thousands
Oct. 31, 2019
USD ($)
Leases [Abstract]  
2020 (remainder of fiscal year) $ 2,030
2021 13,023
2022 17,721
2023 17,098
2024 and thereafter 138,593
Total gross operating lease payments 188,465
Less: tenant allowances (17,931)
Total net operating lease payments 170,534
Less: imputed interest (52,074)
Total lease liabilities, reflecting the present value of net lease payments $ 118,460