v3.23.1
CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (DEFICIT) - USD ($)
$ in Thousands
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Total
Balance at Dec. 31, 2021 $ 626 $ 706,288 $ (683,134) $ 23,780
Balance (in shares) at Dec. 31, 2021 62,628,855      
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Exercise of stock options and warrants $ 1 413   414
Exercise of stock options and warrants (in shares) 101,160      
Stock-based compensation   3,892   3,892
Net loss     (33,011) (33,011)
Balance at Mar. 31, 2022 $ 627 710,593 (716,145) (4,925)
Balance (in shares) at Mar. 31, 2022 62,730,015      
Balance at Dec. 31, 2022 $ 628 720,773 (635,717) 85,684
Balance (in shares) at Dec. 31, 2022 62,828,765      
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Stock-based compensation   2,953   2,953
Net loss     (33,701) (33,701)
Balance at Mar. 31, 2023 $ 628 $ 723,726 $ (669,418) $ 54,936
Balance (in shares) at Mar. 31, 2023 62,828,765