v3.21.1
Leases - Schedule of supplemental cash flow information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Leases [Abstract]      
Operating cash used for operating leases $ 1,629    
Operating cash used for finance leases 326    
Financing cash used for finance leases 2,630 $ 1,898 $ 2,470
Total cash paid in measurement of lease liabilities 4,585    
Operating [1] 4,359 $ 0 $ 0
Finance 8,885    
Total right-of-use assets in exchange for lease liabilities $ 13,244    
[1] Includes $2,741 initial right of use asset recorded upon adoption of ASC 842.