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INCOME TAXES - DEFERRED TAXES (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Significant components of deferred tax assets |  |
Net operating loss carryforwards | $ 272,970 | $ 272,300
Federal and state tax credits | 70,492 | 64,700
Capitalized research and development | 39,503 | 43,300
Stock-based compensation | 8,353 | 11,200
Revenue Participation | 29,547 |
Operating lease liabilities | 767 | 1,100
Other | 8,963 | 3,600
Total deferred tax assets | 430,595 | 396,200
Less: valuation allowance | (429,913) | (395,200)
Net deferred tax assets | 682 | 1,000
Operating leases, right-of-use assets | (682) | (1,000)
Total deferred tax liabilities | (682) | (1,000)
Valuation allowance |  |
Increase (decrease) in valuation allowance | $ 35,000 | $ 45,600

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