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Consolidated Statements Of Stockholders' Equity - USD ($)
Common Stock [Member]
Additional Paid-In Capital [Member]
Accumulated Other Comprehensive Income [Member]
Accumulated Deficit [Member]
Total
Balance at Dec. 31, 2020 $ 35,000 $ 267,086,000 $ (174,921,000) $ 92,200,000  
Balance, Shares at Dec. 31, 2020 35,237,987        
Stock options for employees   249,000   249,000  
Stock options for non-employees   1,000   1,000  
Issuance of common stock pursuant to exercise of stock options $ 1,000 691,000   692,000  
Common Stock, Exercise of stock options 554,019        
Issuance of common stock pursuant to exercise of warrants $ 135,015 1,746,000   1,746,000  
Common stock issued in conjunction with follow-on public offering, net of issuance costs $ 4,000 189,821,000   189,825,000  
Common stock issued in conjunction with follow-on public offering, net of issuance costs, shares 4,081,633        
Net loss     (3,526,000) (3,526,000) $ (3,526,000)
Balance at Mar. 31, 2021 $ 40,000 459,594,000 (178,447,000) 281,187,000  
Balance, Shares at Mar. 31, 2021 40,008,654        
Balance at Dec. 31, 2021 $ 40,000 461,181,000 (207,306,000) 253,915,000 253,915,000
Balance, Shares at Dec. 31, 2021 40,016,792        
Stock options for employees   471,000   471,000  
Stock options for non-employees   24,000   24,000  
Issuance of common stock pursuant to exercise of stock options   211,000   211,000  
Issuance of common stock and warrants, shares 14,488        
Net loss     (17,527,000) (17,527,000) (17,527,000)
Balance at Mar. 31, 2022 $ 40,000 $ 461,887,000 $ (224,833,000) $ 237,094,000 $ 237,094,000
Balance, Shares at Mar. 31, 2022 40,031,280