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Leases - Future lease payments under noncancelable leases (Details)
$ in Thousands
Jan. 31, 2021
USD ($)
Leases [Abstract]  
2022 $ 40,110
2023 36,971
2024 31,340
2025 27,059
2026 19,231
Thereafter 24,371
Total future lease payments 179,082
Less: imputed interest (26,490)
Present value of lease liabilities $ 152,592