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Shareholders Equity (Tables)

12 Months Ended

Dec. 31, 2022

Shareholders Equity

Stock-based compensation expense

Year ended December 31		2022				2021
Cost of sales		$	18,000			$	24,000
Selling			1,000				25,000
Marketing			13,000				12,000
General and administrative			91,000				171,000
		$	123,000			$	232,000

Weighted average assumptions

		2022				2021
Employee Stock Purchase Plan:
Expected life (years)			1.0				1.0
Expected volatility			169	%			142	%
Dividend yield			0	%			0	%
Risk-free interest rate			0.4	%			0.1	%

Stock option activity

		Plan Shares Available for Grant				Plan Options Outstanding				Weighted Average Exercise Price Per Share				Aggregate Intrinsic Value
Balance at January 1, 2021			93,731				30,498			$	14.69
Restricted stock units and awards granted - 2018 Plan			(5,514	)			—
Cancelled or forfeited - 2018 Plan options			2,584				(2,584	)			13.36
Cancelled or forfeited - 2018 Plan restricted stock and restricted stock units			5,508				—				8.69
Stock options exercised			—				(1,973	)			13.59			$	17,100
Cancelled or forfeited - 2013 Plan options			292				(292	)			15.54
Cancelled or forfeited - 2013 Plan restricted stock and restricted stock units			1,047				—				12.39
Cancelled or forfeited - 2003 Plan options			—				(6,527	)			19.66
Balance at December 31, 2021			97,648				19,122			$	13.23
Restricted stock units and awards granted - 2018 Plan			(6,248	)			—
Stock options exercised			—				(1,300	)			8.26			$	2,422
Cancelled or forfeited - 2013 Plan options			1,462				(1,462	)			15.54
Cancelled or forfeited - 2003 Plan options			—				(2,274	)			8.76
Balance at December 31, 2022			92,862				14,086				14.17

Stock options outstanding

				Options Outstanding										Options Exercisable
Exercise Prices				Number Outstanding				Weighted Average Remaining Contractual Life		Weighted Average Exercise Price Per Share				Number Exercisable				Weighted Average Exercise Price Per Share
$	13.65				10,185			5.61 years		$	13.65				10,185			$	13.65
$	15.54				3,901			1.39 years			15.54				3,901				15.54
					14,086			4.44 years		$	14.17				14,086			$	14.17

Restricted stock and restricted stock unit activity

		Number of Shares				Weighted average grant date fair value
Unvested shares at January 1, 2021			49,964			$	8.76
Granted			5,514				8.16
Vested			(40,392	)			8.33
Forfeited or surrendered			(6,555	)			9.28
Unvested shares at December 31, 2021			8,531			$	10.01
Granted			6,248				9.60
Vested			(8,910	)			10.25
Unvested shares at December 31, 2022			5,869			$	9.21

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