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Note 8 - Stockholders' Equity - Cash Dividends Declared (Details) - $ / shares		3 Months Ended		6 Months Ended
	Feb. 28, 2025	Feb. 28, 2025	Feb. 29, 2024	Feb. 28, 2025	Feb. 29, 2024
Amount, per share (in dollars per share)		$ 0.07	$ 0.07	$ 0.14	$ 0.14
O 2025 Q1 Dividends [Member]
Declaration date				Oct. 16, 2024
Amount, per share (in dollars per share)				$ 0.07
Record date				Oct. 30, 2024
Payable date				Nov. 13, 2024
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
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
O 2025 Q2 Dividends [Member]
Declaration date				Jan. 15, 2025
Amount, per share (in dollars per share)				$ 0.07
Record date				Jan. 29, 2025
Payable date				Feb. 12, 2025

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

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

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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

No definition available.

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