GOODWILL AND OTHER INTANGIBLE ASSETS (Intangible Assets) (Details) - USD ($) $ in Thousands	Aug. 31, 2021	Aug. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 21,666	$ 22,069
Accumulated Amortization	11,565	9,421
Net	10,101	12,648
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,203	7,203
Accumulated Amortization	3,621	2,647
Net	3,582	4,556
Customer base
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,079	6,111
Accumulated Amortization	5,629	4,900
Net	450	1,211
Perpetual lease rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,395	4,766
Accumulated Amortization	860	866
Net	3,535	3,900
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,050	3,050
Accumulated Amortization	778	422
Net	2,272	2,628
Brand name
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	838	838
Accumulated Amortization	585	501
Net	253	337
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	101	101
Accumulated Amortization	92	85
Net	$ 9	$ 16