Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets - Additional Information (Detail)

v3.20.1
Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jul. 31, 2019
Jan. 31, 2020
Jan. 31, 2019
Jan. 31, 2018
Goodwill And Intangible Assets [Line Items]        
Loss on Impairment $ 0   $ 15,502  
Long lived assets Impairment charge $ 0      
Goodwill before impairment charge     24,300  
Goodwill   $ 9,775 8,753 $ 25,579
Accumulated goodwill impairment charges   54,800 54,800  
Building carrying value, Ending balance   11,177 20,990  
Intangible assets, Beginning balance   300    
Impairment of Intangible Assets   300    
Intangible assets, Ending balance   0 300  
Amortization expense   1,163 896  
Computer Software, Intangible Asset        
Goodwill And Intangible Assets [Line Items]        
Net book value   0 0  
Cost of Revenue [Member]        
Goodwill And Intangible Assets [Line Items]        
Amortization expense     28  
Service [Member] | Cost of Revenue [Member] | Computer Software, Intangible Asset        
Goodwill And Intangible Assets [Line Items]        
Amortization expense   0 700  
Buildings [Member]        
Goodwill And Intangible Assets [Line Items]        
Long lived assets Impairment charge   1,200    
Building carrying value, Beginning balance   4,700    
Building impairment Charges   1,200    
Building carrying value, Ending balance   $ 3,500 $ 3,467