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INCOME TAXES - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Operating Loss Carryforwards [Line Items] |  |  |  |
Increase (decrease) in valuation allowance | $ 39,907 | $ 33,838 |  |
Research and development tax credits carryforwards | 42,764 | 31,248 |  |
Unrecognized tax benefits | 22,535 | $ 16,371 | $ 12,539 | $ 7,477
Impact of unrecognized tax benefits on effective tax rate, if recognized | 2,484 |  |  |
Federal |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating loss carryforwards | 556,468 |  |  |
Research and development tax credits carryforwards | 39,483 |  |  |
Indefinite operating loss carryforwards | 405,529 |  |  |
State |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating loss carryforwards | 206,519 |  |  |
Research and development tax credits carryforwards | $ 27,351 |  |  |

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