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Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Treasury Stock, Common [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2022 14,129,530 716,692      
Balance at Dec. 31, 2022 $ 42 $ (11,171) $ 423,384 $ (318,300) $ 93,955
Vesting of restricted stock units and issuance of stock under incentive plans (in shares) 236,378        
Vesting of restricted stock units and issuance of stock under incentive plans $ 1 0 (1) 0 0
Share-based compensation 0   3,090   3,090
Net loss       (61,319) (61,319)
Balance at Sep. 30, 2023 $ 43 $ (11,407) 426,473 (379,619) 35,490
Balance (in shares) at Sep. 30, 2023 14,365,908 768,595      
Increase in treasury stock resulting from shares withheld to cover statutory taxes (in shares)   51,903      
Increase in treasury stock resulting from shares withheld to cover statutory taxes   $ (236)     (236)
Balance (in shares) at Jun. 30, 2023 14,357,158 768,595      
Balance at Jun. 30, 2023 $ 43 $ (11,407) 425,491 (345,992) 68,135
Vesting of restricted stock units and issuance of stock under incentive plans (in shares) 8,750        
Vesting of restricted stock units and issuance of stock under incentive plans $ 0   0   0
Share-based compensation 0 0 982 0 982
Net loss 0 0 0 (33,627) (33,627)
Balance at Sep. 30, 2023 $ 43 $ (11,407) 426,473 (379,619) 35,490
Balance (in shares) at Sep. 30, 2023 14,365,908 768,595      
Balance (in shares) at Dec. 31, 2023 14,384,936 768,595      
Balance at Dec. 31, 2023 $ 43 $ (11,407) 427,286 (381,518) 34,404
Vesting of restricted stock units and issuance of stock under incentive plans (in shares) 305,348 0      
Vesting of restricted stock units and issuance of stock under incentive plans $ 2 $ 0 (2) 0 0
Share-based compensation $ 0 $ 0 1,522 0 $ 1,522
Exercise of pre-funded warrants (in shares) 2,955,084 0     2,955,084
Exercise of pre-funded warrants $ 1 $ 0 (1) 0 $ 0
Net loss 0 0 0 (25,847) (25,847)
Issuance of pre-funded warrants 0 0 9,900 0 9,900
Balance at Sep. 30, 2024 $ 46 $ (11,407) 438,705 (407,365) $ 19,979
Balance (in shares) at Sep. 30, 2024 17,645,368 768,595      
Increase in treasury stock resulting from shares withheld to cover statutory taxes (in shares)         0
Balance (in shares) at Jun. 30, 2024 14,680,246 768,595      
Balance at Jun. 30, 2024 $ 44 $ (11,407) 438,237 (399,421) $ 27,453
Vesting of restricted stock units and issuance of stock under incentive plans (in shares) 10,038 0      
Vesting of restricted stock units and issuance of stock under incentive plans $ 1 $ 0 (1) 0 0
Share-based compensation $ 0 $ 0 470 0 470
Exercise of pre-funded warrants (in shares) 2,955,084 0      
Exercise of pre-funded warrants $ 1 $ 0 (1) 0 0
Net loss 0 0 0 (7,944) (7,944)
Balance at Sep. 30, 2024 $ 46 $ (11,407) $ 438,705 $ (407,365) $ 19,979
Balance (in shares) at Sep. 30, 2024 17,645,368 768,595