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Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2021 6,723,438      
Balance at Dec. 31, 2021 $ 67 $ 27,277 $ 1,844 $ 29,188
Net loss Stock-based compensation $ 0 0 (1,837) (1,837)
Stock-based compensation (in shares) 5,500      
Stock-based compensation $ 0 189 0 189
Balance (in shares) at Jun. 30, 2022 6,728,938      
Balance at Jun. 30, 2022 $ 67 27,466 7 27,540
Balance (in shares) at Mar. 31, 2022 6,728,938      
Balance at Mar. 31, 2022 $ 67 27,374 846 28,287
Net loss Stock-based compensation $ 0 0 (839) (839)
Stock-based compensation (in shares) 0      
Stock-based compensation $ 0 92 0 92
Balance (in shares) at Jun. 30, 2022 6,728,938      
Balance at Jun. 30, 2022 $ 67 27,466 7 $ 27,540
Balance (in shares) at Dec. 31, 2022 6,760,938     6,760,938
Balance at Dec. 31, 2022 $ 67 27,712 1,620 $ 29,399
Exercise of stock options and issuance of shares (in shares)       17,500
Balance (in shares) at Mar. 31, 2023 6,778,438      
Balance at Mar. 31, 2023 $ 67 27,920 1,580 $ 29,567
Balance (in shares) at Dec. 31, 2022 6,760,938     6,760,938
Balance at Dec. 31, 2022 $ 67 27,712 1,620 $ 29,399
Net loss Stock-based compensation $ 0 0 (1,153) (1,153)
Stock-based compensation (in shares) 0      
Stock-based compensation $ 0 397 0 397
Exercise of stock options and issuance of shares (in shares) 18,125      
Exercise of stock options and issuance of shares $ 0 76 0 $ 76
Balance (in shares) at Jun. 30, 2023 6,779,063     6,779,063
Balance at Jun. 30, 2023 $ 67 28,185 467 $ 28,719
Balance (in shares) at Mar. 31, 2023 6,778,438      
Balance at Mar. 31, 2023 $ 67 27,920 1,580 29,567
Net loss Stock-based compensation   0 (1,113) (1,113)
Stock-based compensation (in shares) 0      
Stock-based compensation $ 0 262 0 $ 262
Exercise of stock options and issuance of shares (in shares) 625     625
Exercise of stock options and issuance of shares $ 0 3 0 $ 3
Balance (in shares) at Jun. 30, 2023 6,779,063     6,779,063
Balance at Jun. 30, 2023 $ 67 $ 28,185 $ 467 $ 28,719