Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Detail)

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Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Detail) - USD ($)
$ in Thousands
Jan. 31, 2016
Jan. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]    
2017 $ 2,107  
2018 1,267  
2019 631  
2020 121  
2021 0  
2022 and thereafter 0  
Finite-lived intangible assets, Net $ 4,126 $ 7,314