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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

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

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X

- Definition

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+ 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

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- Definition

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+ 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

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- Definition

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+ References

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