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Note 8 - Stockholders' Equity (Details Textual) - $ / shares					3 Months Ended
	Oct. 20, 2022	Sep. 01, 2022	Oct. 20, 2021	Sep. 01, 2021	Nov. 30, 2022	Nov. 30, 2021
Common Stock, Dividends, Per Share, Declared	$ 0.07		$ 0.07		$ 0.07	$ 0.07
Dividends Payable, Date Declared	Nov. 16, 2022		Nov. 17, 2021
Stock Repurchased and Retired During Period, Shares (in shares)					0	0
Stock Issued During Period, Shares, Employee Stock Purchase Plans		3,620		2,636
ESPP [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant					65,600

X

- Definition

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

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