STOCK BASED COMPENSATION (Summary of Shares Repurchased) (Details) - USD ($) $ in Thousands	12 Months Ended
Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2017
STOCK BASED COMPENSATION [Abstract]
Shares repurchased	75,462	37,414	38,634
Cost of repurchase of shares (in thousands)	$ 4,604	$ 3,183	$ 3,193

Number of shares purchased for issuance under share-based payment arrangement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration