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Note 8 - Stockholders' Equity - Cash Dividends Declared (Details) - $ / shares | 12 Months Ended
--- | ---
Aug. 31, 2024 | Aug. 31, 2023
Amount, per share (in dollars per share) | $ 0.28 | $ 0.28
O, 2024, Q1, Dividends [Member] |  |
Declaration Date | Oct. 18, 2023 |
Amount, per share (in dollars per share) | $ 0.07 |
Record Date | Nov. 01, 2023 |
Payable Date | Nov. 15, 2023 |
Declaration Date | Oct. 18, 2023 |
O, 2023, Q1, Dividends [Member] |  |
Declaration Date |  | Oct. 20, 2022
Amount, per share (in dollars per share) |  | $ 0.07
Record Date |  | Nov. 03, 2022
Payable Date |  | Nov. 16, 2022
Declaration Date |  | Oct. 20, 2022
O, 2023, Q2, Dividends [Member] |  |
Declaration Date |  | Jan. 20, 2023
Amount, per share (in dollars per share) |  | $ 0.07
Record Date |  | Feb. 01, 2023
Payable Date |  | Feb. 15, 2023
Declaration Date |  | Jan. 20, 2023
O, 2024, Q2, Dividends [Member] |  |
Declaration Date | Jan. 17, 2024 |
Amount, per share (in dollars per share) | $ 0.07 |
Record Date | Jan. 31, 2024 |
Payable Date | Feb. 14, 2024 |
Declaration Date | Jan. 17, 2024 |
O, 2023, Q3, Dividends [Member] |  |
Declaration Date |  | Apr. 21, 2023
Amount, per share (in dollars per share) |  | $ 0.07
Record Date |  | May 03, 2023
Payable Date |  | May 17, 2023
Declaration Date |  | Apr. 21, 2023
O, 2023, Q4, Dividends [Member] |  |
Declaration Date |  | Jul. 17, 2023
Amount, per share (in dollars per share) |  | $ 0.07
Record Date |  | Aug. 02, 2023
Payable Date |  | Aug. 16, 2023
Declaration Date |  | Jul. 17, 2023
O, 2024, Q3, Dividends [Member] |  |
Declaration Date | Apr. 17, 2024 |
Amount, per share (in dollars per share) | $ 0.07 |
Record Date | May 01, 2024 |
Payable Date | May 15, 2024 |
Declaration Date | Apr. 17, 2024 |
O, 2024, Q4, Dividends [Member] |  |
Declaration Date | Jul. 17, 2024 |
Amount, per share (in dollars per share) | $ 0.07 |
Record Date | Jul. 31, 2024 |
Payable Date | Aug. 14, 2024 |
Declaration Date | Jul. 17, 2024 |

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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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- Definition Date the declared dividend will be paid, in YYYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-3 + Details
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- Definition Date the dividend to be paid was declared, in YYYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-3 + Details
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