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Debt - Summary of Term Loan and Line of Credit (Details) - USD ($)
$ in Thousands
Jan. 31, 2016
Jan. 31, 2015
Debt Instrument [Line Items]    
Total $ 9,221 $ 11,365
Less: Current portion 1,266 1,282
Non-current portion of long-term debt 7,955 10,083
Senior Notes    
Debt Instrument [Line Items]    
Senior term loan 8,535 10,000
Capital Lease Obligations    
Debt Instrument [Line Items]    
Capital lease $ 686 $ 1,365