Quarterly report pursuant to Section 13 or 15(d)

Operating Leases - Schedule of Future Minimum Lease Payments for Operating Leases (Detail)

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Operating Leases - Schedule of Future Minimum Lease Payments for Operating Leases (Detail) - USD ($)
$ in Thousands
Apr. 30, 2020
Jan. 31, 2020
Leases [Abstract]    
2021 $ 769  
2022 1,161  
2023 1,284  
2024 1,318  
2025 1,357  
Thereafter 59  
Total lease payments 5,948  
Less interest 676  
Total operating lease liabilities $ 5,272 $ 5,070