Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Shareholders' Equity (Unaudited)

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Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2020 18,746,157        
Balance at Dec. 31, 2020   $ 94,925,000 $ (2,000) $ (68,909,000) $ 26,014,000
Share-based compensation expense   511,000     511,000
Unrealized gain (loss) on marketable securities     (2,000)   (2,000)
Net loss       (3,622,000) (3,622,000)
Balance (in shares) at Mar. 31, 2021 18,786,157        
Balance at Mar. 31, 2021   95,680,000 (4,000) (72,531,000) 23,145,000
Exercise of common stock options (in shares) 40,000        
Exercise of common stock options   244,000     244,000
Balance (in shares) at Dec. 31, 2020 18,746,157        
Balance at Dec. 31, 2020   94,925,000 (2,000) (68,909,000) 26,014,000
Balance (in shares) at Dec. 31, 2021 26,443,067        
Balance at Dec. 31, 2021   126,576,000 (51,000) (82,501,000) $ 44,024,000
Exercise of common stock options (in shares)         40,000
Exercise of common stock options         $ 244,000
Share-based compensation expense   308,000     308,000
Unrealized gain (loss) on marketable securities     (56,000)   (56,000)
Net loss       (3,508,000) (3,508,000)
Balance (in shares) at Mar. 31, 2022 26,443,067        
Balance at Mar. 31, 2022   $ 126,884,000 $ (107,000) $ (86,009,000) $ 40,768,000