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Unaudited Condensed Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Accumulated Deficit
--- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2023 |  | 17,045,954 |  |
Beginning balance at Dec. 31, 2023 | $ 22,694 | $ 17 | $ 301,893 | $ (279,216)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Issuance of stock from vested restricted stock units (in shares) |  | 217,056 |  |
Exercise of stock options (in shares) |  | 326 |  |
Issuance of stock under Employee Stock Purchase Plan (in shares) |  | 54,605 |  |
Issuance of stock under Employee Stock Purchase Plan | 104 |  | 104 |
Stock-based compensation | 553 |  | 553 |
Net loss | (3,360) |  |  | (3,360)
Ending balance (in shares) at Mar. 31, 2024 |  | 17,317,941 |  |
Ending balance at Mar. 31, 2024 | 19,991 | $ 17 | 302,550 | (282,576)
Beginning balance (in shares) at Dec. 31, 2023 |  | 17,045,954 |  |
Beginning balance at Dec. 31, 2023 | 22,694 | $ 17 | 301,893 | (279,216)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Net loss | (11,354) |  |  |
Ending balance (in shares) at Sep. 30, 2024 |  | 17,520,335 |  |
Ending balance at Sep. 30, 2024 | 12,868 | $ 18 | 303,420 | (290,570)
Beginning balance (in shares) at Mar. 31, 2024 |  | 17,317,941 |  |
Beginning balance at Mar. 31, 2024 | 19,991 | $ 17 | 302,550 | (282,576)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Issuance of stock from vested restricted stock units (in shares) |  | 62,998 |  |
Exercise of stock options (in shares) |  | 636 |  |
Stock-based compensation | 560 |  | 560 |
Net loss | (2,966) |  |  | (2,966)
Ending balance (in shares) at Jun. 30, 2024 |  | 17,381,575 |  |
Ending balance at Jun. 30, 2024 | 17,585 | $ 17 | 303,110 | (285,542)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Issuance of stock from vested restricted stock units (in shares) |  | 13,155 |  |
Exercise of stock options (in shares) |  | 84,162 |  |
Exercise of stock options | 22 |  | 22 |
Issuance of stock under Employee Stock Purchase Plan (in shares) |  | 41,443 |  |
Issuance of stock under Employee Stock Purchase Plan | 72 | $ 1 | 71 |
Stock-based compensation | 217 |  | 217 |
Net loss | (5,028) |  |  | (5,028)
Ending balance (in shares) at Sep. 30, 2024 |  | 17,520,335 |  |
Ending balance at Sep. 30, 2024 | $ 12,868 | $ 18 | 303,420 | (290,570)
Beginning balance (in shares) at Dec. 31, 2024 | 17,640,328 | 17,640,328 |  |
Beginning balance at Dec. 31, 2024 | $ 9,540 | $ 18 | 303,853 | (294,331)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Issuance of stock from vested restricted stock units (in shares) |  | 229,151 |  |
Issuance of stock under Employee Stock Purchase Plan (in shares) |  | 80,554 |  |
Issuance of stock under Employee Stock Purchase Plan | 198 |  | 198 |
Stock-based compensation | 417 |  | 417 |
Net loss | (3,752) |  |  | (3,752)
Ending balance (in shares) at Mar. 31, 2025 |  | 17,950,033 |  |
Ending balance at Mar. 31, 2025 | $ 6,403 | $ 18 | 304,468 | (298,083)
Beginning balance (in shares) at Dec. 31, 2024 | 17,640,328 | 17,640,328 |  |
Beginning balance at Dec. 31, 2024 | $ 9,540 | $ 18 | 303,853 | (294,331)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Exercise of stock options (in shares) | 108 |  |  |
Issuance of stock under Employee Stock Purchase Plan (in shares) | 157,339 |  |  |
Net loss | $ (15,278) |  |  |
Ending balance (in shares) at Sep. 30, 2025 | 22,510,313 | 22,510,313 |  |
Ending balance at Sep. 30, 2025 | $ 18,138 | $ 23 | 327,724 | (309,609)
Beginning balance (in shares) at Mar. 31, 2025 |  | 17,950,033 |  |
Beginning balance at Mar. 31, 2025 | 6,403 | $ 18 | 304,468 | (298,083)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Issuance of stock from public offering and ATM, net of issuance costs (in shares) |  | 3,852,500 |  |
Issuance of stock from public offering, net of issuance costs | 18,627 | $ 4 | 18,623 |
Issuance of stock from warrant exercises (in shares) |  | 107,969 |  |
Issuance of stock from vested restricted stock units (in shares) |  | 88,129 |  |
Exercise of stock options (in shares) |  | 108 |  |
Stock-based compensation | 443 |  | 443 |
Net loss | (4,439) |  |  | (4,439)
Ending balance (in shares) at Jun. 30, 2025 |  | 21,998,739 |  |
Ending balance at Jun. 30, 2025 | 21,034 | $ 22 | 323,534 | (302,522)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Issuance of stock from public offering and ATM, net of issuance costs (in shares) |  | 360,554 |  |
Issuance of stock from public offering, net of issuance costs | 3,398 | $ 1 | 3,397 |
Issuance of stock from vested restricted stock units (in shares) |  | 74,235 |  |
Issuance of stock under Employee Stock Purchase Plan (in shares) |  | 76,785 |  |
Issuance of stock under Employee Stock Purchase Plan | 200 |  | 200 |
Stock-based compensation | 593 |  | 593 |
Net loss | $ (7,087) |  |  | (7,087)
Ending balance (in shares) at Sep. 30, 2025 | 22,510,313 | 22,510,313 |  |
Ending balance at Sep. 30, 2025 | $ 18,138 | $ 23 | $ 327,724 | $ (309,609)

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