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INCOME TAXES (Reconciliation of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2019
INCOME TAXES [Abstract]
Balance at beginning of fiscal year	$ 4,573	$ 6,490	$ 7,005
Gross increase - tax positions in prior period	135	464	530
Gross decrease - tax positions in prior period	(306)
Additions based on tax positions related to the current year	333	186	94
Expirations of the statute of limitations for the assessment of taxes	(824)	(2,567)	(1,139)
Balance at end of fiscal year	$ 3,911	$ 4,573	$ 6,490

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Amount of unrecognized tax benefits.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
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-URI http://asc.fasb.org/extlink&oid=120406818&loc=SL37586934-109318

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 15A
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