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Note 5 - Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

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

		Year ended December 31,
		2023				2022
Stock options		$	522			$	761
Restricted stock			6				15
Total		$	528			$	776

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

		Year ended December 31,
		2023				2022
Risk-free interest rate			4.1	%			4.2	%
Volatility factor			57	%			50	%
Weighted average expected life (years)			4.9				4.8
Forfeiture rate			10.0	%			10.0	%
Dividends			0.0	%			0.0	%

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

Year ended December 31, 2023
		Number of shares				Weighted average exercise price per share				Weighted average remaining contractual term				Aggregate intrinsic value
Shares under option – January 1			1,425,693			$	6.72
Options granted			231,650				6.69
Options exercised			(254,393	)			5.83
Options forfeited or expired			(152,355	)			5.06
Shares under option – December 31			1,250,595			$	7.10				3.97			$	515
Vested and expected to vest - December 31			1,151,228			$	7.17				3.79			$	452
Options exercisable – December 31			789,209			$	7.56				2.69			$	241

Year ended December 31, 2022
		Number of shares				Weighted average exercise price per share
Shares under option – January 1			1,306,824			$	6.87
Options granted			289,950				5.42
Options exercised			(59,500	)			3.82
Options forfeited or expired			(111,581	)			6.56
Shares under option – December 31			1,425,693			$	6.72
Options exercisable – December 31			881,804			$	7.13

Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

				Option outstanding												Options exercisable
Range of exercise prices				Number of outstanding options				Weighted- average remaining contractual life				Weighted- average exercise price				Number of options exercisable				Weighted- average exercise price
$4.07	-	$6.36			338,364				4.79			$	5.42				156,099			$	5.54
$6.51	-	$6.84			353,733				5.54				6.71				134,583				6.51
$6.97	-	$8.25			334,165				2.89				7.64				290,355				7.74
$8.45	-	$9.96			224,333				1.88				9.44				208,172				9.51
$4.07	-	$9.96			1,250,595				3.97			$	7.10				789,209			$	7.56

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Tabular disclosure of share-based payment arrangement.

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