Note 11 - Stock-based Compensation Plan (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	Three Months Ended March 31,
	2024		2023
Cost of revenue	$	31	$	19
Selling expense		11		10
Engineering and product development expense		4		10
General and administrative expense		303		435
	$	349	$	474

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

	2024			2023
Risk-free interest rate		3.98	%		3.94	%
Dividend yield		0.00	%		0.00	%
Expected common stock market price volatility factor		.57			.57
Weighted average expected life of stock options (years)		6.25			6.25

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

	Number of Shares			Weighted Average Exercise Price
Options outstanding, January 1, 2024 (171,735 exercisable)		505,006		$	10.46
Granted		165,364			11.33
Exercised		(4,925	)		3.69
Canceled		(23,401	)		10.27
Options outstanding, March 31, 2024 (228,364 exercisable)		642,044			10.74

Nonvested Restricted Stock Shares Activity [Table Text Block]

	Number of Shares			Weighted Average Grant Date Fair Value
Unvested shares outstanding, January 1, 2024		189,784		$	11.51
Granted		138,838			11.38
Vested		(39,790	)		11.52
Forfeited		(11,200	)		12.29
Unvested shares outstanding, March 31, 2024		277,632			11.41