Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Additional Information (Detail)

v3.21.2
Significant Accounting Policies - Additional Information (Detail)
3 Months Ended 6 Months Ended 12 Months Ended
Jul. 31, 2021
USD ($)
Customer
Jul. 31, 2020
Customer
Jul. 31, 2021
USD ($)
Customer
Jul. 31, 2020
USD ($)
Customer
Jan. 31, 2021
USD ($)
Customer
Significant Accounting Policies [Line Items]          
Goodwill impairment     $ 0   $ 0
Impairment costs     0   0
Deferred capitalized commission costs $ 431,000   431,000   553,000
Amortization expense     123,000 $ 218,000  
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 3 2 3 1  
Customer Concentration Risk [Member] | Total Revenue [Member] | Customer One [Member]          
Significant Accounting Policies [Line Items]          
Concentration risk percentage 15.00% 22.00% 14.00% 18.00%  
Customer Concentration Risk [Member] | Total Revenue [Member] | Customer Two [Member]          
Significant Accounting Policies [Line Items]          
Concentration risk percentage 15.00% 11.00% 10.00%    
Customer Concentration Risk [Member] | Total Revenue [Member] | Customer Three [Member]          
Significant Accounting Policies [Line Items]          
Concentration risk percentage 12.00%   10.00%    
Credit Concentration Risk [Member] | Accounts Receivable [Member]          
Significant Accounting Policies [Line Items]          
Number of customers accounted | Customer     2   2
Credit Concentration Risk [Member] | Accounts Receivable [Member] | Customer One [Member]          
Significant Accounting Policies [Line Items]          
Concentration risk percentage     14.00%   18.00%
Credit Concentration Risk [Member] | Accounts Receivable [Member] | Customer Two [Member]          
Significant Accounting Policies [Line Items]          
Concentration risk percentage     11.00%   16.00%