Basis of Presentation and Summary of Significant Accounting Policies - Schedules of Concentration of Revenue and Accounts Receivable (Parenthetical) (Details) - Customer Concentration Risk			3 Months Ended		6 Months Ended
	Jul. 31, 2017	Jan. 31, 2017	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2017	Jul. 31, 2016
Revenue | Partner A
Accounting Policies [Line Items]
Concentration risk percentage			24.00%		22.00%
Revenue | Partner A | Maximum
Accounting Policies [Line Items]
Concentration risk percentage				10.00%		10.00%
Revenue | Partner B
Accounting Policies [Line Items]
Concentration risk percentage			19.00%		10.00%
Revenue | Partner B | Maximum
Accounting Policies [Line Items]
Concentration risk percentage				10.00%		10.00%
Accounts Receivable | Partner A
Accounting Policies [Line Items]
Concentration risk percentage	29.00%	16.00%
Accounts Receivable | Partner B
Accounting Policies [Line Items]
Concentration risk percentage	12.00%
Accounts Receivable | Partner B | Maximum
Accounting Policies [Line Items]
Concentration risk percentage		10.00%