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Condensed Consolidated Statements Of Stockholders' Equity - USD ($)
Common Stock [Member]
Restricted Stock [Member]
Common Stock [Member]
Additional Paid-In Capital [Member]
Accumulated Deficit [Member]
Restricted Stock [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
Issuance of common stock pursuant to exercise of stock options, shares   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)
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, 2020   $ 35,000 267,086,000 (174,921,000)   92,200,000
Balance, Shares at Dec. 31, 2020   35,237,987        
Net loss           (18,213,000)
Balance at Sep. 30, 2021   $ 40,000 460,659,000 (193,134,000)   267,565,000
Balance, Shares at Sep. 30, 2021   40,016,792        
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        
Stock options for employees     410,000     410,000
Stock options for non-employees     5,000     5,000
Issuance of common stock pursuant to exercise of stock options     3,000     3,000
Issuance of common stock pursuant to exercise of stock options, shares   3,240        
Net loss       (5,125,000)   (5,125,000)
Balance at Jun. 30, 2021   $ 40,000 460,012,000 (183,572,000)   276,480,000
Balance, Shares at Jun. 30, 2021   40,011,894        
Stock options for employees     548,000     548,000
Stock options for non-employees     24,000     24,000
Issuance of common stock pursuant to exercise of stock options     75,000     75,000
Issuance of common stock pursuant to exercise of stock options, shares   4,898        
Net loss       (9,562,000)   (9,562,000)
Balance at Sep. 30, 2021   $ 40,000 460,659,000 (193,134,000)   267,565,000
Balance, Shares at Sep. 30, 2021   40,016,792        
Balance at Dec. 31, 2021   $ 40,000 461,181,000 (207,306,000)   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 pursuant to exercise of stock options, shares   14,488        
Net loss       (17,527,000)   (17,527,000)
Balance at Mar. 31, 2022   $ 40,000 461,887,000 (224,833,000)   237,094,000
Balance, Shares at Mar. 31, 2022   40,031,280        
Balance at Dec. 31, 2021   $ 40,000 461,181,000 (207,306,000)   253,915,000
Balance, Shares at Dec. 31, 2021   40,016,792        
Expiration of restricted stock Performance Awards         (57,143)  
Net loss           (57,112,000)
Balance at Sep. 30, 2022   $ 40,000 463,097,000 (264,418,000)   198,719,000
Balance, Shares at Sep. 30, 2022   40,059,514        
Balance at Mar. 31, 2022   $ 40,000 461,887,000 (224,833,000)   237,094,000
Balance, Shares at Mar. 31, 2022   40,031,280        
Stock options for employees     462,000     462,000
Stock options for non-employees     23,000     23,000
Issuance of common stock pursuant to exercise of stock options     119,000     119,000
Issuance of common stock pursuant to exercise of stock options, shares   66,637        
Net loss       (19,328,000)   (19,328,000)
Balance at Jun. 30, 2022   $ 40,000 462,491,000 (244,161,000)   218,370,000
Balance, Shares at Jun. 30, 2022   40,097,917        
Stock options for employees     447,000     447,000
Stock options for non-employees     23,000     23,000
Issuance of common stock pursuant to exercise of stock options     136,000     136,000
Issuance of common stock pursuant to exercise of stock options, shares   18,740        
Expiration of restricted stock Performance Awards (57,143)          
Net loss       (20,257,000)   (20,257,000)
Balance at Sep. 30, 2022   $ 40,000 $ 463,097,000 $ (264,418,000)   $ 198,719,000
Balance, Shares at Sep. 30, 2022   40,059,514