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CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK, REDEEMABLE COMMON STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | AOCI Attributable to Parent [Member] | Retained Earnings [Member]
--- | --- | --- | --- | --- | ---
Beginning balance, shares at Dec. 31, 2022 |  | 121,667,250 |  |  |
Beginning balance at Dec. 31, 2022 | $ 74,051 | $ 122 | $ 450,786 | $ (119) | $ (376,738)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Vesting of restricted stock units (in shares) |  | 540,238 |  |  |
Vesting of restricted stock units | 0 |  |  |  |
Stock-based compensation expense | 1,645 |  | 1,645 |  |
Net income (loss) | (24,020) |  |  |  | (24,020)
Ending balance, shares at Mar. 31, 2023 |  | 122,207,488 |  |  |
Ending balance at Mar. 31, 2023 | 51,676 | $ 122 | 452,431 | (119) | (400,758)
Beginning balance, shares at Dec. 31, 2022 |  | 121,667,250 |  |  |
Beginning balance at Dec. 31, 2022 | 74,051 | $ 122 | 450,786 | (119) | (376,738)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income (loss) | (79,732) |  |  |  |
Ending balance, shares at Jun. 30, 2023 |  | 164,418,011 |  |  |
Ending balance at Jun. 30, 2023 | 67,535 | $ 164 | 523,960 | (119) | (456,470)
Beginning balance, shares at Mar. 31, 2023 |  | 122,207,488 |  |  |
Beginning balance at Mar. 31, 2023 | 51,676 | $ 122 | 452,431 | (119) | (400,758)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of common stock and prefunded warrants in private placement equity transaction, net of issuance costs (in shares) |  | 34,521,046 |  |  |
Issuance of common stock and prefunded warrants in private placement equity transaction, net of issuance costs | 60,443 | $ 35 | 60,408 |  |
Issuance of shares of common stock under employee stock purchase plan (in shares) |  | 114,577 |  |  |
Issuance of shares of common stock under employee stock purchase plan | 175 |  | 175 |  |
Exercise of stock and warrants (in shares) |  | 7,476,345 |  |  |
Exercise of stock and warrants | 8,811 | $ 7 | 8,804 |  |
Vesting of restricted stock units (in shares) |  | 98,555 |  |  |
Vesting of restricted stock units | 0 |  |  |  |
Stock-based compensation expense | 2,142 |  | 2,142 |  |
Net income (loss) | (55,712) |  |  |  | (55,712)
Ending balance, shares at Jun. 30, 2023 |  | 164,418,011 |  |  |
Ending balance at Jun. 30, 2023 | 67,535 | $ 164 | 523,960 | (119) | (456,470)
Beginning balance, shares at Dec. 31, 2023 |  | 167,434,595 |  |  |
Beginning balance at Dec. 31, 2023 | 51,099 | $ 167 | 528,956 | (119) | (477,905)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Exercise of stock and warrants | 0 |  | (1) |  |
Vesting of restricted stock units (in shares) |  | 503,186 |  |  |
Vesting of restricted stock units |  | $ 1 |  |  |
Stock-based compensation expense | 1,739 |  | 1,739 |  |
Unrealized loss on marketable securities | (36) |  |  | (36) |
Net income (loss) | (51,766) |  |  |  | (51,766)
Ending balance, shares at Mar. 31, 2024 |  | 167,937,781 |  |  |
Ending balance at Mar. 31, 2024 | 1,036 | $ 168 | 530,694 | (155) | (529,671)
Beginning balance, shares at Dec. 31, 2023 |  | 167,434,595 |  |  |
Beginning balance at Dec. 31, 2023 | 51,099 | $ 167 | 528,956 | (119) | (477,905)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income (loss) | 39,067 |  |  |  |
Ending balance, shares at Jun. 30, 2024 |  | 168,196,180 |  |  |
Ending balance at Jun. 30, 2024 | 94,451 | $ 168 | 533,280 | (159) | (438,838)
Beginning balance, shares at Mar. 31, 2024 |  | 167,937,781 |  |  |
Beginning balance at Mar. 31, 2024 | 1,036 | $ 168 | 530,694 | (155) | (529,671)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of shares of common stock under employee stock purchase plan (in shares) |  | 235,068 |  |  |
Issuance of shares of common stock under employee stock purchase plan | 158 |  | 158 |  |
Exercise of stock and warrants | 0 |  |  |  |
Vesting of restricted stock units (in shares) |  | 23,331 |  |  |
Stock-based compensation expense | 2,428 |  | 2,428 |  |
Unrealized loss on marketable securities | (4) |  |  | (4) |
Net income (loss) | 90,833 |  |  |  | 90,833
Ending balance, shares at Jun. 30, 2024 |  | 168,196,180 |  |  |
Ending balance at Jun. 30, 2024 | $ 94,451 | $ 168 | $ 533,280 | $ (159) | $ (438,838)

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