Note 8 - Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

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

				Weighted
				Average
				Exercise Price
	Shares			Per Option
Options outstanding, December 31, 2020		568,740		$	3.42
Granted to employees and directors		-			-
Exercised		(134,494	)		3.17
Canceled/expired/forfeited		(6,666	)		-
Options outstanding, December 31, 2021		427,580			3.50
Granted to employees and directors		19,600			3.99
Exercised		(21,665	)		3.70
Canceled/expired/forfeited		(14,900	)		3.93
Options outstanding, December 31, 2022		410,615			3.50
Options exercisable, December 31, 2022		395,915			3.48

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

			Options Outstanding								Options Exercisable
Range of Exercise Prices			Options		Weighted Average Exercise Price		Weighted Average Remaining Contract Life (in years)		Aggregate Intrinsic Value		Options		Weighted Average Exercise Price		Weighted Average Remaining Contract Life (in years)		Aggregate Intrinsic Value
$3.20	-	$3.99		410,615	$	3.50		1.09	$	214,000		395,915	$	3.48		0.96	$	214,000