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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | AOCI Attributable to Parent [Member] | Total
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2022 | $ 177 | $ 722,049 | $ (695,336) | $ (129) | $ 26,761
Balance, shares at Dec. 31, 2022 | 17,719,720 |  |  |  |
Stock-based compensation expense |  | 3,254 |  |  | 3,254
Issuance of common stock in connection with restricted share awards, net of cancellations and shares settled for tax withholding settlement | $ 18 | (31) |  |  | (13)
Issuance of common stock in connection with restricted share awards, net of cancellations and shares settled for tax withholding settlement, shares | 1,719,460 |  |  |  |
Net loss |  |  | (37,597) |  | (37,597)
Other comprehensive income (loss) |  |  |  | 30 | 30
Issuance of common stock, net of offering costs under open market sale agreement (ATM) | $ 20 | 6,603 |  |  | 6,623
Issuance of common stock, net of offering costs under open market sale agreement (ATM), shares | 1,990,321 |  |  |  |
Issuance of common stock, net of offering costs under direct placement offering | $ 32 | 22,948 |  |  | 22,980
Issuance of common stock, net of offering costs under direct placement offering, shares | 3,284,407 |  |  |  |
Balance at Sep. 30, 2023 | $ 247 | 754,823 | (732,933) | (99) | 22,038
Balance, shares at Sep. 30, 2023 | 24,713,908 |  |  |  |
Balance at Jun. 30, 2023 | $ 215 | 730,322 | (721,097) | (95) | 9,345
Balance, shares at Jun. 30, 2023 | 21,478,157 |  |  |  |
Stock-based compensation expense |  | 1,557 |  |  | 1,557
Issuance of common stock in connection with restricted share awards, net of cancellations and shares settled for tax withholding settlement |  | (4) |  |  | (4)
Issuance of common stock in connection with restricted share awards, net of cancellations and shares settled for tax withholding settlement, shares | (48,656) |  |  |  |
Net loss |  |  | (11,836) |  | (11,836)
Other comprehensive income (loss) |  |  |  | (4) | (4)
Issuance of common stock, net of offering costs under direct placement offering | $ 32 | 22,948 |  |  | 22,980
Issuance of common stock, net of offering costs under direct placement offering, shares | 3,284,407 |  |  |  |
Balance at Sep. 30, 2023 | $ 247 | 754,823 | (732,933) | (99) | 22,038
Balance, shares at Sep. 30, 2023 | 24,713,908 |  |  |  |
Balance at Dec. 31, 2023 | $ 265 | 764,151 | (749,524) | (66) | 14,826
Balance, shares at Dec. 31, 2023 | 26,523,878 |  |  |  |
Stock-based compensation expense |  | 4,673 |  |  | 4,673
Issuance of common stock in connection with restricted share awards, net of cancellations and shares settled for tax withholding settlement | $ 17 | (534) |  |  | (517)
Issuance of common stock in connection with restricted share awards, net of cancellations and shares settled for tax withholding settlement, shares | 1,693,417 |  |  |  |
Reclassification of derivative liability |  | 1,135 |  |  | 1,135
Net loss |  |  | (54,441) |  | (54,441)
Other comprehensive income (loss) |  |  |  | (18) | (18)
Issuance of common stock, net of offering costs under open market sale agreement (ATM) | $ 19 | 9,943 |  |  | 9,962
Issuance of common stock, net of offering costs under open market sale agreement (ATM), shares | 1,902,376 |  |  |  |
Issuance of common stock in connection with underwritten offering, net of offering costs | $ 123 | 70,030 |  |  | 70,153
Issuance of common stock in connection with underwritten offering, net of offering costs, shares | 12,285,056 |  |  |  |
Issuance of common stock upon exercise of pre-funded warrants, net of shares settled | $ 10 | (10) |  |  |
Issuance of common stock upon exercise of pre-funded warrants, net of shares settled, shares | 999,979 |  |  |  |
Balance at Sep. 30, 2024 | $ 434 | 849,388 | (803,965) | (84) | 45,773
Balance, shares at Sep. 30, 2024 | 43,404,706 |  |  |  |
Balance at Jun. 30, 2024 | $ 417 | 846,654 | (773,696) | (134) | 73,241
Balance, shares at Jun. 30, 2024 | 41,661,993 |  |  |  |
Stock-based compensation expense |  | 1,804 |  |  | 1,804
Issuance of common stock in connection with restricted share awards, net of cancellations and shares settled for tax withholding settlement | $ 17 | (205) |  |  | (188)
Issuance of common stock in connection with restricted share awards, net of cancellations and shares settled for tax withholding settlement, shares | 1,742,713 |  |  |  |
Reclassification of derivative liability |  | 1,135 |  |  | 1,135
Net loss |  |  | (30,269) |  | (30,269)
Other comprehensive income (loss) |  |  |  | 50 | 50
Balance at Sep. 30, 2024 | $ 434 | $ 849,388 | $ (803,965) | $ (84) | $ 45,773
Balance, shares at Sep. 30, 2024 | 43,404,706 |  |  |  |

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