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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, 2013
Jan. 31, 2013
Finite Lived Intangible Assets Future Amortization Expense [Abstract]    
2014 $ 163  
2015 655  
2016 655  
2017 655  
2018 655  
2019 and thereafter 664  
Net Carrying Amount $ 3,447 $ 3,989