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Goodwill and Other Intangible Assets - Future Estimated Amortization Expense Related to Amortizable Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Oct. 31, 2014
Jan. 31, 2014
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2015 $ 449  
2016 1,795  
2017 1,753  
2018 1,732  
2019 1,394  
2020 and thereafter 4,782  
Net Carrying Amount $ 11,905 $ 3,201