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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 |  |  |  |  |  |  |  |  |  |

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- 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
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Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

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