v3.24.0.1
Statements of 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, 2021 $ 23 $ 194,212 $ (165,854) $ 28,381
Beginning balance, shares at Dec. 31, 2021 23,207      
Stock-based compensation 3,367 3,367
Stock-based compensation, shares 194      
Stock option exercises 244 244
Stock option exercises, shares 45      
At-the-market sale of stock, net of commissions and expenses $ 1 5,762 5,763
At-the-market sale of stock, net of commissions and expenses, shares 527      
Net loss (17,441) (17,441)
Ending balance, value at Dec. 31, 2022 $ 24 203,585 (183,295) 20,314
Ending balance, shares at Dec. 31, 2022 23,973      
Stock-based compensation 4,013 4,013
Stock-based compensation, shares 357      
Stock option exercises 128 128
Stock option exercises, shares 33      
Forfeited restricted stock awards
Forfeited restricted stock awards, shares (20)      
At-the-market sale of stock, net of commissions and expenses $ 2 13,503 13,505
At-the-market sale of stock, net of commissions and expenses, shares 1,764      
Net loss (19,790) (19,790)
Ending balance, value at Dec. 31, 2023 $ 26 $ 221,229 $ (203,085) $ 18,170
Ending balance, shares at Dec. 31, 2023 26,107