Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Additional Information (Detail)

v3.21.1
Significant Accounting Policies - Additional Information (Detail)
3 Months Ended 12 Months Ended
Apr. 30, 2021
USD ($)
Customer
Apr. 30, 2020
USD ($)
Customer
Jan. 31, 2021
USD ($)
Customer
Jan. 31, 2020
USD ($)
Significant Accounting Policies [Line Items]        
Impairment costs $ 0     $ 0
Deferred capitalized commission costs 504,000     $ 553,000
Amortization expense 49,000 $ 135,000    
COVID-19 [Member]        
Significant Accounting Policies [Line Items]        
Goodwill impairment $ 0   $ 0  
Customer Concentration Risk [Member] | Total Revenue [Member]        
Significant Accounting Policies [Line Items]        
Number of customers accounted | Customer 2 2    
Customer Concentration Risk [Member] | Total Revenue [Member] | Customer One [Member]        
Significant Accounting Policies [Line Items]        
Concentration risk percentage 18.00% 15.00%    
Customer Concentration Risk [Member] | Total Revenue [Member] | Customer Two [Member]        
Significant Accounting Policies [Line Items]        
Concentration risk percentage 16.00% 13.00%    
Credit Concentration Risk [Member] | Accounts Receivable [Member]        
Significant Accounting Policies [Line Items]        
Number of customers accounted | Customer 3   2  
Credit Concentration Risk [Member] | Accounts Receivable [Member] | Customer One [Member]        
Significant Accounting Policies [Line Items]        
Concentration risk percentage 22.00%   18.00%  
Credit Concentration Risk [Member] | Accounts Receivable [Member] | Customer Two [Member]        
Significant Accounting Policies [Line Items]        
Concentration risk percentage 16.00%   16.00%  
Credit Concentration Risk [Member] | Accounts Receivable [Member] | Customer Three [Member]        
Significant Accounting Policies [Line Items]        
Concentration risk percentage 15.00%