XML 58 R47.htm IDEA: XBRL DOCUMENT v3.21.2
Operating Leases - Schedule of Future Minimum Lease Payments for Operating Leases (Detail) - USD ($)
$ in Thousands
Jul. 31, 2021
Jan. 31, 2021
Leases [Abstract]    
2022 $ 435  
2023 809  
2024 798  
2025 823  
Total lease payments 2,865  
Less interest 233  
Total operating lease liabilities $ 2,632 $ 5,457