OVERVIEW AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentration Risk (Details) - Partner Concentration Risk	12 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2017
Revenue | Partner A
Concentration Risk [Line Items]
Concentration risk percentage	10.00%
Revenue | Partner B
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	20.00%	19.00%
Revenue | Partner C
Concentration Risk [Line Items]
Concentration risk percentage	24.00%	18.00%	16.00%
Revenue | Partner D
Concentration Risk [Line Items]
Concentration risk percentage			10.00%
Revenue | Partner E
Concentration Risk [Line Items]
Concentration risk percentage	13.00%	13.00%	14.00%
Accounts Receivable | Partner A
Concentration Risk [Line Items]
Concentration risk percentage		16.00%
Accounts Receivable | Partner B
Concentration Risk [Line Items]
Concentration risk percentage		13.00%
Accounts Receivable | Partner C
Concentration Risk [Line Items]
Concentration risk percentage	27.00%	15.00%
Accounts Receivable | Partner E
Concentration Risk [Line Items]
Concentration risk percentage	18.00%	12.00%