XML 74 R64.htm IDEA: XBRL DOCUMENT v3.21.2
Revenue from Contracts with Customers - Contract Assets And Liabilities (Detail) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jul. 31, 2021
Jan. 31, 2021
Jan. 31, 2020
Contract Assets:      
Unbilled revenue—current $ 106 $ 85 $ 13
Total unbilled revenue 106 85 13
Contract Liabilities:      
Deferred revenue & customer deposits—current 399 691 220
Deferred revenue & customer deposits—non-current     12
Total deferred revenue & customer deposits $ 399 $ 691 $ 232
Minimum      
Contract With Customers [Line Items]      
Contract with customers, turn over period (in months) 3 months 3 months  
Maximum      
Contract With Customers [Line Items]      
Contract with customers, turn over period (in months) 9 months 6 months