Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Additional Information (Detail)

v3.19.2
Significant Accounting Policies - Additional Information (Detail)
 3 Months Ended 6 Months Ended
Jul. 31, 2019
USD ($)
Customer
Jan. 31, 2019
Customer
Jul. 31, 2018
Customer
Jul. 31, 2019
USD ($)
Customer
Jul. 31, 2018
USD ($)
Customer
Feb. 01, 2019
USD ($)
Significant Accounting Policies [Line Items]            
Accumulated goodwill impairment charges $ 54,800,000     $ 54,800,000    
Impairment costs       0 $ 0  
Operating lease right-of-use assets 1,745,000     1,745,000   $ 1,700,000
Operating lease liability $ 1,889,000     $ 1,889,000   $ 1,700,000
Hardware and Software Maintenance [Member]            
Significant Accounting Policies [Line Items]            
Commissions and special incentive payments amortized period       5 years    
Maximum [Member]            
Significant Accounting Policies [Line Items]            
Contractual customer payment terms for goods or service.       1 year    
Credit Concentration Risk [Member] | Accounts Receivable [Member]            
Significant Accounting Policies [Line Items]            
Number of customers accounted | Customer   2   3    
Credit Concentration Risk [Member] | Accounts Receivable [Member] | Customer One [Member]            
Significant Accounting Policies [Line Items]            
Concentration risk percentage   44.00%   17.00%    
Credit Concentration Risk [Member] | Accounts Receivable [Member] | Customer Two [Member]            
Significant Accounting Policies [Line Items]            
Concentration risk percentage   15.00%   15.00%    
Credit Concentration Risk [Member] | Accounts Receivable [Member] | Customer Three [Member]            
Significant Accounting Policies [Line Items]            
Concentration risk percentage       10.00%    
Customer Concentration Risk [Member] | Total Revenue [Member]            
Significant Accounting Policies [Line Items]            
Number of customers accounted | Customer 2   1 1 1  
Customer Concentration Risk [Member] | Total Revenue [Member] | Customer One [Member]            
Significant Accounting Policies [Line Items]            
Concentration risk percentage 20.00%   19.00% 14.00% 19.00%  
Customer Concentration Risk [Member] | Total Revenue [Member] | Customer Two [Member]            
Significant Accounting Policies [Line Items]            
Concentration risk percentage 10.00%