Condensed Consolidated Balance Sheets - Unaudited - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents	$ 97,805	$ 99,120
Marketable securities	230,693	259,172
Interest receivable	1,752	2,447
Prepaid assets	3,014	4,192
Prepaid clinical	6,968	11,505
Assets held for sale	19,368	19,368
Other current assets	62	80
Total current assets	359,662	395,884
Fixed assets, net	43,326	42,222
Right of use assets, net	3,073	2,967
Total assets	406,061	441,073
Current liabilities
Accounts payable	3,122	3,633
Lease liabilities	857	765
Accrued expenses and other	27,572	31,137
Income taxes payable	1,257	682
Total current liabilities	32,808	36,217
Income tax payable, net of current portion	764	748
Lease liabilities, net of current portion	2,512	2,471
Total liabilities	36,084	39,436
Commitments and contingencies
Redeemable noncontrolling interest	1,368,530	1,396,591
Shareholders' deficit
Additional paid-in capital	218,926	205,736
Accumulated other comprehensive (loss) gain	75	130
Accumulated deficit	(1,217,583)	(1,200,849)
Total shareholders' deficit	(998,553)	(994,954)
Total liabilities and shareholders' deficit	406,061	441,073
Common Class A [Member]
Shareholders' deficit
Common stock value	13	13
Common Class B [Member]
Shareholders' deficit
Common stock value	$ 16	$ 16