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Note 10 - Common Stock Options (Tables)

12 Months Ended

Sep. 30, 2025

Notes Tables

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

		Years Ended September 30
		2025				2024
Expected volatility			N/A				32.07	%
Expected dividends			N/A				2.84	%
Expected exercise term (years)			N/A				7
Risk-free interest rate			N/A				4.95	%

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

		Number of Shares				Weighted- Average Exercise Price				Weighted- Average Remaining Contractual Terms (years)				Aggregate Intrinsic Value1
Options outstanding, September 30, 2023			22,000			$	20.23				5.6			$	18,388
Options granted			10,000				16.62
Options forfeited			(4,000	)			19.90
Options outstanding, September 30, 2024			28,000			$	18.98				5.8			$	127,988
Options granted			—
Options exercised			—
Options outstanding, September 30, 2025			28,000			$	18.98				4.8			$	125,388
Vested and exercisable at September 30, 2025			28,000			$	18.98				4.8			$	125,388

		Years Ended September 30
		2025				2024
Weighted-average grant date option fair value		$	—			$	5.15
Stock-based compensation			—				51,500
Intrinsic value of options exercised			—				—
Proceeds from exercise of stock options			—				—

X

- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
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- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

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