Note 8 - Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

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

Expected volatility	83.1	%
Expected life (years)	2.5
Risk-free interest rate	5.51	%
Expected dividend yield	1.04	%

Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]

Options Outstanding							Options Exercisable
Options Outstanding	Weighted Average Remaining Contractual Life		Weighted Average Exercise Price		Aggregate Intrinsic Value		Options Exercisable		Weighted Average Exercise Price		Aggregate Intrinsic Value
119,750		4.81	$	3.11	$	109,340		107,250	$	3.20	$	91,840

Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]

	2023					2022
	Shares			Weighted Average Exercise Price		Shares		Weighted Average Exercise Price
Options outstanding at beginning of year		101,500		$	2.97		85,000	$	2.52
Granted		19,750			3.85		16,500		5.29
Exercised		(1,000	)		3.01		0		0
Forfeited		(500	)		5.29		0		0
Balance at December 31:		119,750		$	3.11		101,500	$	2.97
Options Exercisable at December 31:		107,250		$	3.20		76,500	$	3.15