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Consolidated Statements Of Stockholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-In Capital [Member]
Accumulated Other Comprehensive Income [Member]
Accumulated Deficit [Member]
Total
Balance at Dec. 31, 2019 $ 22 $ 190,664 $ (168,587) $ 22,099
Balance, Shares at Dec. 31, 2019 21,841,810        
Stock options for employees 961 961
Stock options for employees, shares        
Stock options for non-employees 27 27
Issuance of common stock pursuant to exercise of stock options 256 256
Issuance of common stock pursuant to exercise of stock options, shares 71,105        
Issuance of common stock pursuant to exercise of warrants $ 4 4,936 4,940
Issuance of common stock pursuant to exercise of warrants, shares 3,950,072        
Common stock issued in conjunction with follow-on public offering, net of issuance costs $ 9 70,242 70,251
Common stock issued in conjunction with follow-on public offering, net of issuance costs, shares 9,375,000        
Net loss (6,334) (6,334)
Balance at Dec. 31, 2020 $ 35 267,086 (174,921) 92,200
Balance, Shares at Dec. 31, 2020 35,237,987        
Stock options for employees 1,706 1,706
Stock options for employees, shares        
Stock options for non-employees 53 53
Issuance of common stock pursuant to exercise of stock options 1,824 1,824
Issuance of common stock pursuant to exercise of stock options, shares 143,153        
Issuance of common stock pursuant to exercise of warrants $ 1 691 692
Issuance of common stock pursuant to exercise of warrants, shares 554,019        
Common stock issued in conjunction with follow-on public offering, net of issuance costs $ 4 189,821 189,825
Common stock issued in conjunction with follow-on public offering, net of issuance costs, shares 4,081,633        
Net loss (32,385) (32,385)
Balance at Dec. 31, 2021 $ 40 461,181 (207,306) 253,915
Balance, Shares at Dec. 31, 2021 40,016,792        
Stock options for employees 1,972 1,972
Stock options for non-employees (94) (94)
Expiration of restricted stock Performance Awards  
Expiration of restricted stock Performance Awards,shares (57,143)        
Issuance of common stock pursuant to exercise of stock options 475 $ 475
Issuance of common stock pursuant to exercise of stock options, shares 109,241       203,640
Common stock issued in conjunction with follow-on public offering, net of issuance costs $ 2 47,327 $ 47,329
Common stock issued in conjunction with follow-on public offering, net of issuance costs, shares 1,666,667        
Net loss (76,246) (76,246)
Balance at Dec. 31, 2022 $ 42 $ 511,049 $ (283,552) $ 227,539
Balance, Shares at Dec. 31, 2022 41,735,557