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Basis of Presentation and Summary of Significant Accounting Policies - Schedules of Concentration of Revenue and Accounts Receivable (Details) - Partner A - Customer Concentration Risk
12 Months Ended
Jan. 31, 2018
Jan. 31, 2017
Jan. 31, 2018
Revenue      
Accounting Policies [Line Items]      
Concentration risk percentage     26.00%
Accounts Receivable      
Accounting Policies [Line Items]      
Concentration risk percentage 26.00% 16.00%