Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v2.4.0.8
Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
1 Months Ended 6 Months Ended 12 Months Ended
May 31, 2012
Jul. 31, 2013
Increment
Jan. 31, 2014
Jan. 31, 2013
Jan. 31, 2012
Significant Accounting Policies [Line Items]          
Share-based compensation arrangement by share-based payment award, options, grants in period, gross 875,000   12,500 892,500 250,000
Number of increments related to vesting of stock options   3      
Share-based compensation arrangement by share-based payment award, options, vested and expected to vest, outstanding, number   437,500      
Share-based compensation arrangement by share-based payment award, options, vested in period, fair value $ 3,300,000 $ 3,300,000      
Share-based compensation arrangement by share-based payment award, award requisite service period   2 years 1 month 6 days      
Period of service condition of vesting iterations   36 months      
Number of stock options vest in first increment   291,667      
Number of stock options vest in second increment   291,666      
Number of stock options vest in third increment   291,667      
Derived service period for first increment   7 years 2 months 12 days      
Derived service period for two increment   9 years 7 months 6 days      
Derived service period for three increment   10 years 9 months 18 days      
Additional stock compensation   1,800,000      
Allowance for doubtful accounts     327,000 946,000  
Provision for obsolescence     100,000 300,000 600,000
Cost method investment, ownership percentage     20.00%    
Cost of goods sold, amortization     1,300,000 2,400,000 2,500,000
Deferred tax assets valuation allowance, percentage     100.00%    
Minimum threshold tax position     likelihood of occurrence greater than 50%    
Foreign currency transaction gain (loss), realized     400,000 23,000 200,000
Comprehensive loss     (3,336,000) (11,217,000) (4,970,000)
Minimum period warranty of product     1 year    
Professional services     90.00%    
Service-level commitments     99.50%    
Advertising expense     $ 100,000 $ 200,000 $ 400,000
Minimum [Member]
         
Significant Accounting Policies [Line Items]          
Equity method investment, ownership percentage     20.00%    
Support agreements     12 months    
Maximum [Member]
         
Significant Accounting Policies [Line Items]          
Equity method investment, ownership percentage     50.00%    
Support agreements     36 months