Note 14 - Stock Option Plan and Non-Employee Director Compensation Plan (Tables)

12 Months Ended

Dec. 31, 2024

Share-Based Payment Arrangement [Abstract]

Stock Option Activity

Stock option activity during 2024, 2023, and 2022 was as follows:

	Number of options			Weighted average exercise price		Weighted average remaining contractual term (in years)		Aggregate intrinsic value
Outstanding at December 31, 2021		113,950		$	37.58
Exercised		—			—
Forfeited		(34,150	)		37.07
Granted		29,350			37.26
Outstanding at December 31, 2022		109,150			37.65
Exercised		—			—
Forfeited		(22,600	)		43.15
Granted		35,000			29.51
Outstanding at December 31, 2023		121,550			34.29
Exercised		—			—
Forfeited		(24,275	)		37.69
Granted		40,000			23.40
Outstanding at December 31, 2024		137,275		$	30.51		5.24	$	599
Exercisable at December 31, 2024		45,315		$	33.74		1.76	$	58

Outstanding Stock Options

As of December 31, 2024, outstanding stock options consist of the following:

	Options outstanding		Exercise price		Remaining life (in years)		Options exercisable		Exercise price
		40,000	$	23.40		9.13		—	$	—
		34,200		29.51		8.13		6,840		29.51
		19,325		32.50		1.13		19,325		32.50
		19,150		36.50		0.12		19,150		36.50
		24,600		37.26		2.12		—		—
Outstanding at December 31, 2024		137,275	$	30.51		5.24		45,315	$	33.74

Intrinsic Value Related to Stock Options Exercised

The intrinsic value related to total stock options exercised during 2024, 2023, and 2022 are as follows:

	2024		2023		2022
Intrinsic value of stock options exercised	$	—	$	—	$	—