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INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Income Taxes [Line Items] |  |
Increase (decrease) in deferred tax assets valuation allowance | $ 16,100 | $ 49,600
Deferred tax assets, net operating loss carryforwards for federal | 818,500 |
Deferred tax assets, net operating loss carryforwards for state | 349,800 |
Research and development tax credit carryforwards | 58,409 | 54,336
Accrued interest and/or penalties | 200 | 300
Unrecognized tax benefits that would impact effective tax rate | 900 | 1,200
Prepaid Expenses and Other Current Assets |  |
Income Taxes [Line Items] |  |
Refundable research tax credits | 4,100 | 3,100
Other noncurrent assets |  |
Income Taxes [Line Items] |  |
Refundable research tax credits | 12,800 | $ 15,400
French |  |
Income Taxes [Line Items] |  |
Deferred tax assets, net operating loss carryforwards for foreign | 120,400 |
Federal |  |
Income Taxes [Line Items] |  |
Research and development tax credit carryforwards | 50,000 |
State |  |
Income Taxes [Line Items] |  |
Research and development tax credit carryforwards | $ 33,200 |

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