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Goodwill and Intangible Assets - Schedule of Expected Amortization Expense of Intangible Assets (Details) - USD ($)
$ in Thousands
Jan. 31, 2016
Jan. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]    
2017 $ 3,352  
2018 519  
2019 23  
2020 1  
Net Carrying Value $ 3,895 $ 6,343