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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
Jan. 31, 2014
Jan. 31, 2013
Jan. 31, 2012
Finite Lived Intangible Assets Future Amortization Expense [Abstract]      
2015 $ 639    
2016 634    
2017 634    
2018 634    
2019 634    
Thereafter 26    
Net Carrying Amount $ 3,201 $ 3,989 $ 4,696