GOODWILL AND OTHER INTANGIBLE ASSETS (Intangible Assets) (Details) - USD ($) $ in Thousands	Aug. 31, 2020	Aug. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 22,069	$ 20,766
Accumulated Amortization	9,421	7,454
Net	12,648	13,312
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,203	6,993
Accumulated Amortization	2,647	1,709
Net	4,556	5,284
Customer base
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,111	6,088
Accumulated Amortization	4,900	4,081
Net	1,211	2,007
Perpetual lease rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,766	4,146
Accumulated Amortization	866	749
Net	3,900	3,397
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,050	2,810
Accumulated Amortization	422	382
Net	2,628	2,428
Brand name
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	838	628
Accumulated Amortization	501	454
Net	337	174
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	101	101
Accumulated Amortization	85	79
Net	$ 16	$ 22