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GOODWILL AND OTHER INTANGIBLE ASSETS (Changes in the Carrying Amount of Goodwill) (Details) - USD ($)	12 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2018
Goodwill [Line Items]
Goodwill, beginning	$ 74,325,000	$ 74,509,000
Foreign currency translation	195,000	(184,000)
Goodwill, ending	74,520,000	74,325,000	$ 74,509,000
Accumulated impairment loss, beginning	(10,187,000)	(10,199,000)
Foreign currency translation	(12,000)	12,000
Accumulated impairment loss, ending	(10,199,000)	(10,187,000)	(10,199,000)
Goodwill, net	64,321,000	64,138,000	64,310,000
Foreign currency translation	183,000	(172,000)
Goodwill, net	64,321,000	64,138,000	64,310,000
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
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	2,384,000	2,568,000
Foreign currency translation	195,000	(184,000)
Goodwill, ending	2,579,000	2,384,000	2,568,000
Accumulated impairment loss, beginning	(151,000)	(163,000)
Foreign currency translation	(12,000)	12,000
Accumulated impairment loss, ending	(163,000)	(151,000)	(163,000)
Goodwill, net	2,416,000	2,233,000	2,405,000
Foreign currency translation	183,000	(172,000)
Goodwill, net	$ 2,416,000	$ 2,233,000	$ 2,405,000

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-Name Accounting Standards Codification
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-SubTopic 210
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