Quarterly report pursuant to Section 13 or 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, unless otherwise specified
Jul. 31, 2013
Jan. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]    
2014 (for the remaining six months) $ 2,556  
2015 4,145  
2016 3,297  
2017 2,330  
2018 1,530  
2019 and thereafter 904  
Finite-lived intangible assets, Net $ 14,762 $ 17,314