Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Additional Information (Detail)

v3.20.2
Significant Accounting Policies - Additional Information (Detail)
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Oct. 31, 2020
USD ($)
Customer
Oct. 31, 2019
Customer
Jul. 31, 2020
USD ($)
Oct. 31, 2020
USD ($)
Customer
Oct. 31, 2019
USD ($)
Customer
Jan. 31, 2020
USD ($)
Customer
Significant Accounting Policies [Line Items]            
Accumulated goodwill impairment charges $ 54,800,000     $ 54,800,000    
Impairment costs       0   $ 0
Deferred capitalized commission costs $ 864,000     864,000   $ 958,000
Amortization expense       $ 275,000 $ 168,000  
COVID-19 [Member]            
Significant Accounting Policies [Line Items]            
Goodwill impairment     $ 0      
Maximum [Member]            
Significant Accounting Policies [Line Items]            
Contractual customer payment terms for goods or service.       1 year    
Customer Concentration Risk [Member] | Total Revenue [Member]            
Significant Accounting Policies [Line Items]            
Number of customers accounted | Customer 1 2   1 0  
Customer Concentration Risk [Member] | Total Revenue [Member] | Customer One [Member]            
Significant Accounting Policies [Line Items]            
Concentration risk percentage 29.00% 13.00%   21.00%    
Customer Concentration Risk [Member] | Total Revenue [Member] | Customer One [Member] | Minimum [Member]            
Significant Accounting Policies [Line Items]            
Concentration risk percentage         10.00%  
Customer Concentration Risk [Member] | Total Revenue [Member] | Customer Two [Member]            
Significant Accounting Policies [Line Items]            
Concentration risk percentage   13.00%        
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       39.00%   16.00%
Credit Concentration Risk [Member] | Accounts Receivable [Member] | Customer Two [Member]            
Significant Accounting Policies [Line Items]            
Concentration risk percentage       11.00%   10.00%