SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Intangible Assets Weighted Average Amortization Period (Details)	12 Months Ended
	Jul. 31, 2020
Finite-Lived Intangible Assets
Finite-lived Intangible Assets, Weighted Average Amortization Period	5 years 10 months 24 days
Trademarks and patents
Finite-Lived Intangible Assets
Finite-lived Intangible Assets, Weighted Average Amortization Period	14 years 3 months 18 days
Customer list
Finite-Lived Intangible Assets
Finite-lived Intangible Assets, Weighted Average Amortization Period	3 years 3 months 18 days