Quarterly report pursuant to Section 13 or 15(d)

Revenues - Additional Information (Details)

v3.21.2
Revenues - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jan. 31, 2021
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2021
Oct. 31, 2020
Disaggregation of Revenue [Line Items]          
Revenue remaining performance obligation amount   $ 30,110   $ 30,110  
Deferred commission expenses $ 1,319 1,494   1,494  
Other Current Assets [Member]          
Disaggregation of Revenue [Line Items]          
Deferred commission expenses   1,061   1,061  
Other Noncurrent Assets [Member]          
Disaggregation of Revenue [Line Items]          
Deferred commission expenses   433   433  
One Customer [Member]          
Disaggregation of Revenue [Line Items]          
Revenue from contract with customers excluding assessed tax         $ 2,174
Two Customers [Member]          
Disaggregation of Revenue [Line Items]          
Revenue from contract with customers excluding assessed tax       $ 4,283  
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | One Customer [Member]          
Disaggregation of Revenue [Line Items]          
Concentration risk percentage         10.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Two Customers [Member]          
Disaggregation of Revenue [Line Items]          
Concentration risk percentage       22.00%  
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Maximum [Member]          
Disaggregation of Revenue [Line Items]          
Concentration risk percentage       10.00%  
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Minimum [Member]          
Disaggregation of Revenue [Line Items]          
Concentration risk percentage       10.00%  
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Three Customers [Member]          
Disaggregation of Revenue [Line Items]          
Concentration risk percentage 85.00%     60.00%  
Subscription Revenue [Member]          
Disaggregation of Revenue [Line Items]          
Revenue from contract with customers excluding assessed tax   3,792 $ 2,180 $ 10,993 $ 6,475
Product Subscription And Support Revenue [Member]          
Disaggregation of Revenue [Line Items]          
Revenue from contract with customers excluding assessed tax   $ 6,092 $ 4,432 $ 17,992 $ 13,231