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Note 19 - Subsequent Events (Details Textual) - $ / shares										12 Months Ended
	Oct. 18, 2023	Jul. 20, 2023	Apr. 21, 2023	Jan. 10, 2023	Oct. 20, 2022	Jul. 20, 2022	Apr. 22, 2022	Jan. 21, 2022	Oct. 20, 2021	Aug. 31, 2023	Aug. 31, 2022
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)		$ 0.07	$ 0.07	$ 0.07	$ 0.07	$ 0.07	$ 0.07	$ 0.07	$ 0.07	$ 0.28	$ 0.28
Subsequent Event [Member]
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.07

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

+ Details

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: