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
Feb. 02, 2015
Oct. 31, 2015
Jan. 31, 2015
Finite-Lived Intangible Assets [Line Items]      
Finite-life intangible assets, Gross   $ 56,480 $ 50,219
Accumulated Amortization   (45,947) (42,905)
Finite-life intangible assets, Net   $ 10,533 7,314
Customer Contracts [Member]      
Finite-Lived Intangible Assets [Line Items]      
Weighted average remaining life (years) 7 years 6 years 3 months 18 days  
Finite-life intangible assets, Gross   $ 34,889 30,397
Accumulated Amortization   (26,620) (24,160)
Finite-life intangible assets, Net   $ 8,269 6,237
Non-Compete Agreements [Member]      
Finite-Lived Intangible Assets [Line Items]      
Weighted average remaining life (years) 2 years 2 years  
Finite-life intangible assets, Gross   $ 2,561 2,433
Accumulated Amortization   (2,455) (2,433)
Finite-life intangible assets, Net   $ 106  
Completed Technology [Member]      
Finite-Lived Intangible Assets [Line Items]      
Weighted average remaining life (years)   5 years 1 month 6 days  
Finite-life intangible assets, Gross   $ 11,336 10,307
Accumulated Amortization   (9,732) (9,230)
Finite-life intangible assets, Net   $ 1,604 1,077
Trademarks, Patents and Other [Member]      
Finite-Lived Intangible Assets [Line Items]      
Weighted average remaining life (years)   7 years 1 month 6 days  
Finite-life intangible assets, Gross   $ 7,694 7,082
Accumulated Amortization   (7,140) $ (7,082)
Finite-life intangible assets, Net   $ 554