SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Intangible Assets Weighted Average Amortization Period (Details)	12 Months Ended
	Jul. 31, 2018
Finite-Lived Intangible Assets
Finite-lived Intangible Assets, Weighted Average Amortization Period	6 years 9 months 17 days
Trademarks and patents
Finite-Lived Intangible Assets
Finite-lived Intangible Assets, Weighted Average Amortization Period	15 years 10 months 23 days
Debt issuance costs
Finite-Lived Intangible Assets
Finite-lived Intangible Assets, Weighted Average Amortization Period	2 years 1 month 5 days
Customer list
Finite-Lived Intangible Assets
Finite-lived Intangible Assets, Weighted Average Amortization Period	5 years 3 months 18 days