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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Share-Based Payment Arrangement, Employee [Member]
Common Stock [Member]
Share-Based Payment Arrangement, Employee [Member]
Additional Paid-in Capital [Member]
Share-Based Payment Arrangement, Employee [Member]
Retained Earnings [Member]
Share-Based Payment Arrangement, Employee [Member]
Share-Based Payment Arrangement, Nonemployee [Member]
Common Stock [Member]
Share-Based Payment Arrangement, Nonemployee [Member]
Additional Paid-in Capital [Member]
Share-Based Payment Arrangement, Nonemployee [Member]
Retained Earnings [Member]
Share-Based Payment Arrangement, Nonemployee [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2020                 35,237,987      
Balance at Dec. 31, 2020                 $ 35 $ 267,086 $ (174,921) $ 92,200
Stock-based compensation for stock options $ 0 $ 1,706 $ 0 $ 1,706 $ 0 $ 53 $ 0 $ 53        
Issuance of common stock pursuant to exercise of stock options (in shares)                 143,153      
Issuance of common stock pursuant to exercise of stock options                 $ 0 1,824 0 1,824
Issuance of common stock pursuant to exercise of warrants (in shares)                 554,019      
Issuance of common stock pursuant to exercise of warrants                 $ 1 691 0 692
Common stock issued in conjunction with registered direct offering, net of issuance costs (in shares)                 4,081,633      
Common stock issued in conjunction with registered direct offering, net of issuance costs                 $ 4 189,821 0 189,825
Net loss                 $ 0 0 (32,385) (32,385)
Balance (in shares) at Dec. 31, 2021                 40,016,792      
Balance at Dec. 31, 2021                 $ 40 461,181 (207,306) 253,915
Stock-based compensation for stock options 0 1,972 0 1,972 0 94 0 94        
Issuance of common stock pursuant to exercise of stock options (in shares)                 109,241      
Issuance of common stock pursuant to exercise of stock options                 $ 0 475 0 475
Common stock issued in conjunction with registered direct offering, net of issuance costs (in shares)                 1,666,667      
Common stock issued in conjunction with registered direct offering, net of issuance costs                 $ 2 47,327 0 47,329
Net loss                 $ 0 0 (76,246) (76,246)
Expiration of restricted stock Performance Awards (in shares)                 (57,143)      
Expiration of restricted stock Performance Awards                 $ 0 0 0 0
Balance (in shares) at Dec. 31, 2022                 41,735,557      
Balance at Dec. 31, 2022                 $ 42 511,049 (283,552) $ 227,539
Stock-based compensation for stock options $ 0 $ 4,493 $ 0 $ 4,493 $ 0 $ 93 $ 0 $ 93        
Issuance of common stock pursuant to exercise of stock options (in shares)                 501,362     602,420
Issuance of common stock pursuant to exercise of stock options                 $ 0 2,560 0 $ 2,560
Net loss                 $ 0 0 (97,217) (97,217)
Balance (in shares) at Dec. 31, 2023                 42,236,919      
Balance at Dec. 31, 2023                 $ 42 $ 518,195 $ (380,769) $ 137,468