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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Accumulated Other Comprehensive Loss | Accumulated Deficit
--- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2022 |  | 126,913,992 |  |  |
Beginning balance at Dec. 31, 2022 | $ 998,023 | $ 127 | $ 1,160,882 | $ (3,899) | $ (159,087)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of common stock for ESPP (in shares) |  | 96,733 |  |  |
Issuance of common stock for ESPP | 811 |  | 811 |  |
Issuance of restricted stock, net of forfeitures (in shares) |  | 114,738 |  |  |
Issuance of restricted stock, net of forfeitures | (147) |  | (147) |  |
Issuance of common stock for stock options (in shares) |  | 75,028 |  |  |
Issuance of common stock for stock options | 751 |  | 751 |  |
Stock issuance fees and expenses | (4) |  | (4) |  |
Stock-based compensation expense | 4,758 |  | 4,758 |  |
Net unrealized gain on marketable securities, net of tax | 1,065 |  |  | 1,065 |
Net loss | (30,795) |  |  |  | (30,795)
Ending balance (in shares) at Mar. 31, 2023 |  | 127,200,491 |  |  |
Ending balance at Mar. 31, 2023 | 974,462 | $ 127 | 1,167,051 | (2,834) | (189,882)
Beginning balance (in shares) at Dec. 31, 2022 |  | 126,913,992 |  |  |
Beginning balance at Dec. 31, 2022 | 998,023 | $ 127 | 1,160,882 | (3,899) | (159,087)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net unrealized gain on marketable securities, net of tax | 2,053 |  |  |  |
Net loss | (73,642) |  |  |  |
Ending balance (in shares) at Sep. 30, 2023 |  | 127,261,476 |  |  |
Ending balance at Sep. 30, 2023 | 947,428 | $ 127 | 1,181,876 | (1,846) | (232,729)
Beginning balance (in shares) at Mar. 31, 2023 |  | 127,200,491 |  |  |
Beginning balance at Mar. 31, 2023 | 974,462 | $ 127 | 1,167,051 | (2,834) | (189,882)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of common stock for ESPP (in shares) |  | 78,302 |  |  |
Issuance of common stock for ESPP | 1,029 |  | 1,029 |  |
Issuance of restricted stock, net of forfeitures (in shares) |  | (194,448) |  |  |
Issuance of restricted stock, net of forfeitures | (1,527) |  | (1,527) |  |
Issuance of common stock for stock options (in shares) |  | 60,073 |  |  |
Issuance of common stock for stock options | 610 |  | 610 |  |
Stock issuance fees and expenses | (18) |  | (18) |  |
Stock-based compensation expense | 5,705 |  | 5,705 |  |
Net unrealized gain on marketable securities, net of tax | 262 |  |  | 262 |
Net loss | (24,331) |  |  |  | (24,331)
Ending balance (in shares) at Jun. 30, 2023 |  | 127,144,418 |  |  |
Ending balance at Jun. 30, 2023 | 956,192 | $ 127 | 1,172,850 | (2,572) | (214,213)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of common stock for ESPP (in shares) |  | 64,785 |  |  |
Issuance of common stock for ESPP | 863 |  | 863 |  |
Issuance of restricted stock, net of forfeitures (in shares) |  | (35,670) |  |  |
Issuance of restricted stock, net of forfeitures | (41) |  | (41) |  |
Issuance of common stock for stock options (in shares) |  | 87,943 |  |  |
Issuance of common stock for stock options | 1,026 |  | 1,026 |  |
Stock issuance fees and expenses | (1) |  | (1) |  |
Stock-based compensation expense | 7,179 |  | 7,179 |  |
Net unrealized gain on marketable securities, net of tax | 726 |  |  | 726 |
Net loss | (18,516) |  |  |  | (18,516)
Ending balance (in shares) at Sep. 30, 2023 |  | 127,261,476 |  |  |
Ending balance at Sep. 30, 2023 | $ 947,428 | $ 127 | 1,181,876 | (1,846) | (232,729)
Beginning balance (in shares) at Dec. 31, 2023 | 127,369,142 | 127,369,142 |  |  |
Beginning balance at Dec. 31, 2023 | $ 941,537 | $ 127 | 1,190,139 | (1,674) | (247,055)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of common stock for ESPP (in shares) |  | 70,278 |  |  |
Issuance of common stock for ESPP | 917 |  | 917 |  |
Issuance of restricted stock, net of forfeitures (in shares) |  | (17,398) |  |  |
Issuance of restricted stock, net of forfeitures | (199) |  | (199) |  |
Issuance of common stock for stock options (in shares) |  | 12,764 |  |  |
Issuance of common stock for stock options | 102 |  | 102 |  |
Stock issuance fees and expenses | (4) |  | (4) |  |
Stock-based compensation expense | 7,774 |  | 7,774 |  |
Net unrealized gain on marketable securities, net of tax | 344 |  |  | 344 |
Net loss | (27,061) |  |  |  | (27,061)
Ending balance (in shares) at Mar. 31, 2024 |  | 127,434,786 |  |  |
Ending balance at Mar. 31, 2024 | $ 923,410 | $ 127 | 1,198,729 | (1,330) | (274,116)
Beginning balance (in shares) at Dec. 31, 2023 | 127,369,142 | 127,369,142 |  |  |
Beginning balance at Dec. 31, 2023 | $ 941,537 | $ 127 | 1,190,139 | (1,674) | (247,055)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of common stock for stock options (in shares) | 373,522 |  |  |  |
Net unrealized gain on marketable securities, net of tax | $ 1,031 |  |  |  |
Net loss | $ (63,402) |  |  |  |
Ending balance (in shares) at Sep. 30, 2024 | 128,061,944 | 128,061,944 |  |  |
Ending balance at Sep. 30, 2024 | $ 908,210 | $ 128 | 1,219,182 | (643) | (310,457)
Beginning balance (in shares) at Mar. 31, 2024 |  | 127,434,786 |  |  |
Beginning balance at Mar. 31, 2024 | 923,410 | $ 127 | 1,198,729 | (1,330) | (274,116)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of common stock for ESPP (in shares) |  | 102,112 |  |  |
Issuance of common stock for ESPP | 1,280 |  | 1,280 |  |
Issuance of restricted stock, net of forfeitures (in shares) |  | 32,607 |  |  |
Issuance of restricted stock, net of forfeitures | (1,631) |  | (1,631) |  |
Issuance of common stock for stock options (in shares) |  | 281,608 |  |  |
Issuance of common stock for stock options | 2,321 | $ 1 | 2,320 |  |
Stock issuance fees and expenses | (3) |  | (3) |  |
Stock-based compensation expense | 8,841 |  | 8,841 |  |
Net unrealized gain on marketable securities, net of tax | 308 |  |  | 308 |
Net loss | (18,642) |  |  |  | (18,642)
Ending balance (in shares) at Jun. 30, 2024 |  | 127,851,113 |  |  |
Ending balance at Jun. 30, 2024 | 915,884 | $ 128 | 1,209,536 | (1,022) | (292,758)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of common stock for ESPP (in shares) |  | 75,238 |  |  |
Issuance of common stock for ESPP | 897 |  | 897 |  |
Issuance of restricted stock, net of forfeitures (in shares) |  | 56,443 |  |  |
Issuance of restricted stock, net of forfeitures | (603) |  | (603) |  |
Issuance of common stock for stock options (in shares) |  | 79,150 |  |  |
Issuance of common stock for stock options | 886 |  | 886 |  |
Stock issuance fees and expenses | (4) |  | (4) |  |
Stock-based compensation expense | 8,470 |  | 8,470 |  |
Net unrealized gain on marketable securities, net of tax | 379 |  |  | 379 |
Net loss | $ (17,699) |  |  |  | (17,699)
Ending balance (in shares) at Sep. 30, 2024 | 128,061,944 | 128,061,944 |  |  |
Ending balance at Sep. 30, 2024 | $ 908,210 | $ 128 | $ 1,219,182 | $ (643) | $ (310,457)

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