GOODWILL AND OTHER INTANGIBLE ASSETS (Changes in the Carrying Amount of Goodwill) (Details) - USD ($)	12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2019
Goodwill [Line Items]
Goodwill, beginning	$ 74,520,000	$ 74,325,000
Foreign currency translation	(98,000)	195,000
Goodwill, ending	76,331,000	74,520,000	$ 74,325,000
Goodwill, Acquired During Period	1,909,000
Accumulated impairment loss, beginning	(10,199,000)	(10,187,000)
Foreign currency translation	5,000	(12,000)
Accumulated impairment loss, ending	(10,194,000)	(10,199,000)	(10,187,000)
Goodwill, net	66,137,000	64,321,000	64,138,000
Foreign currency translation	(93,000)	183,000
Goodwill, net	66,137,000	64,321,000	64,138,000
Goodwill impairment	0	0	0
North America
Goodwill [Line Items]
Goodwill, beginning	71,941,000	71,941,000
Foreign currency translation	0	0
Goodwill, ending	71,941,000	71,941,000	71,941,000
Goodwill, Acquired During Period	0
Accumulated impairment loss, beginning	(10,036,000)	(10,036,000)
Foreign currency translation	0	0
Accumulated impairment loss, ending	(10,036,000)	(10,036,000)	(10,036,000)
Goodwill, net	61,905,000	61,905,000	61,905,000
Foreign currency translation	0	0
Goodwill, net	61,905,000	61,905,000	61,905,000
Europe
Goodwill [Line Items]
Goodwill, beginning	2,579,000	2,384,000
Foreign currency translation	(98,000)	195,000
Goodwill, ending	4,390,000	2,579,000	2,384,000
Goodwill, Acquired During Period	1,909,000
Accumulated impairment loss, beginning	(163,000)	(151,000)
Foreign currency translation	5,000	(12,000)
Accumulated impairment loss, ending	(158,000)	(163,000)	(151,000)
Goodwill, net	4,232,000	2,416,000	2,233,000
Foreign currency translation	(93,000)	183,000
Goodwill, net	$ 4,232,000	$ 2,416,000	$ 2,233,000