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Note 12 - Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

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

		2022				2021
Cost of revenue		$	34			$	30
Research and development			57				7
Selling			27				10
General and administrative			317				268
Total stock-based compensation expense		$	435			$	315

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

Stock price		$	5.03
Exercise price		$	5.03
Dividend yield			0	%
Expected volatility			68	%
Risk-free interest rate			3.09	%
Expected life (in years)			6

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

		Awards (in Shares)				Weighted Average Exercise Price
Outstanding at December 31, 2020			417,000			$	11.26
Granted			333,500				4.13
Expired / cancelled			(132,000	)			11.73
Exercised			-				-
Outstanding at December 31, 2021			618,500				7.32
Granted			198,500				5.04
Expired / cancelled			(144,000	)			11.72
Exercised			-				-
Outstanding at December 31, 2022			673,000			$	5.70

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

					Options Outstanding																Options Exercisable
									Weighted				Weighted												Weighted
									Average				Average												Average
Exercise					Number				Remaining				Exercise				Intrinsic				Number				Exercise				Intrinsic
Price Range					Outstanding				Contractual				Price				Value				Exercisable				Price				Value
$ 4.00	-	7.00				533,000				8.6			$	4.53			$	492,765				125,500			$	4.44			$	111,375
$ 7.01	-	10.00				20,000				5.3			$	8.07			$	-				20,000			$	8.07			$	-
$ 10.01	-	12.00				120,000				4.2			$	10.52			$	-				120,000			$	10.52			$	-

Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

						Weighted
						Average Grant
		Shares of				Date Fair
		Restricted Stock				Value
Unvested outstanding at January 1, 2021			-			$	-
Granted			42,800				4.65
Vested			(36,000	)			4.60
Forfeited or cancelled			(6,800	)			4.90
Unvested outstanding at December 31, 2021			-				-
Granted			32,000				5.02
Vested			(32,000	)			5.02
Forfeited or cancelled			-				-
Unvested outstanding at December 31, 2022			-			$	-

						Weighted
		Shares of				Average Grant
		Restricted				Date Fair
		Stock Units				Value
Unvested outstanding at January 1, 2021			8,750			$	5.00
Granted			-				-
Vested			(3,250	)			5.29
Forfeited or cancelled			-				-
Unvested outstanding at December 31, 2021			5,500				4.82
Granted			-				-
Vested			(5,500	)			4.82
Forfeited or cancelled			-				- -
Unvested outstanding at December 31, 2022			-			$	-

X

- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

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