Note 13 - Contingencies and Commitments (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Dividends, Common Stock, Cash		$ 299,000	$ 304,000	$ 320,000	$ 322,000
O,2025,M3, Dividends [Member] | Forecast [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)	$ 0.0075
Dividends, Common Stock, Cash	$ 304,000