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