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Statements of Changes in Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Beginning balance, value at Dec. 31, 2020 $ 8 $ 80,166 $ (51,023) $ 29,151
Beginning balance, shares at Dec. 31, 2020 8,482      
Stock issued for director services - vested 742 742
Stock issued for director services - vested, shares 41      
Stock issued to escrow account - unvested
Stock issued to escrow account - unvested, shares (34)      
Stock option expense 445 445
Warrants exercised for cash $ 1 2,854 2,855
Warrants exercised for cash, shares 446      
Stock option exercise (cashless) (630) (630)
Stock option exercise (cashless), shares 36      
Stock option exercise (for cash) 11 11
Stock option exercise (for cash) , shares 1      
Net loss (6,596) (6,596)
Ending balance, value at Dec. 31, 2021 $ 9 83,588 (57,619) 25,978
Ending balance, shares at Dec. 31, 2021 8,972      
Stock issued for director services - vested 410 410
Stock issued for director services - vested, shares 22      
Stock issued to escrow account - unvested
Stock issued to escrow account - unvested, shares 4      
Stock issued for acquisition $ 1 14,358 14,359
Stock issued for acquisition , shares 1,055      
Employee stock-based compensation expense 2,000 2,000
Warrants exercised for cash 501 501
Warrants exercised for cash, shares 79      
Stock option exercise and restricted stock unit vestings (cashless) (499) (499)
Stock option exercise and restricted stock unit vestings (cashless), shares 34      
Stock issued for Committed Equity Facility 140 140
Stock issued for Committed Equity Facility, shares 11      
Sale of stock under Committed Equity Facility
Sale of stock under committed equity facility, shares 1      
Net loss (19,682) (19,682)
Ending balance, value at Dec. 31, 2022 $ 10 $ 100,498 $ (77,301) $ 23,207
Ending balance, shares at Dec. 31, 2022 10,178