Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Schedule of Intangible Assets (Detail)

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Goodwill and Intangible Assets - Schedule of Intangible Assets (Detail) - USD ($)
$ in Thousands
9 Months Ended
Oct. 31, 2018
Jan. 31, 2018
Finite-Lived Intangible Assets [Line Items]    
Weighted average remaining life (Years) 1 year 10 months 24 days  
Finite-life intangible assets, Gross $ 36,971 $ 52,125
Accumulated Amortization (36,440) (50,822)
Finite-life intangible assets, Net $ 531 1,303
Customer Contracts [Member]    
Finite-Lived Intangible Assets [Line Items]    
Weighted average remaining life (Years) 1 year 10 months 6 days  
Finite-life intangible assets, Gross $ 17,895 30,818
Accumulated Amortization (17,482) (29,836)
Finite-life intangible assets, Net 413 982
Non-Compete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-life intangible assets, Gross 2,473 2,639
Accumulated Amortization $ (2,473) (2,635)
Finite-life intangible assets, Net   4
Completed Technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Weighted average remaining life (Years) 1 year 10 months 9 days  
Finite-life intangible assets, Gross $ 9,655 11,479
Accumulated Amortization (9,561) (11,203)
Finite-life intangible assets, Net $ 94 276
Trademarks, Patents and Other [Member]    
Finite-Lived Intangible Assets [Line Items]    
Weighted average remaining life (Years) 3 years  
Finite-life intangible assets, Gross $ 6,948 7,189
Accumulated Amortization (6,924) (7,148)
Finite-life intangible assets, Net $ 24 $ 41