Condensed Consolidated Statements of Cash Flows - Unaudited - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities
Net loss before noncontrolling interest	$ (73,799)	$ (71,732)
Adjustments to reconcile net loss before noncontrolling interest to net cash flows used in operating activities:
Depreciation and amortization	2,372	1,702
Equity-based compensation	15,489	24,222
Gain on marketable securities, net	(3,802)	(1,981)
Loss on disposal of equipment	131	3
Changes in operating assets and liabilities:
Interest receivable	(1,373)	(8,090)
Prepaid and other assets	(6,162)	2,256
Accounts payable and accrued expenses	(5,838)	12,430
Income taxes payable	43	282
Net cash flows used in operating activities	(72,939)	(40,908)
Cash flows from investing activities
Purchases of marketable securities	(82,880)	(261,847)
Sales and maturities of marketable securities	171,445	60,768
Purchase of equipment and facility expansion	(1,596)	(4,686)
Net cash flows provided by (used in) investing activities	86,969	(205,765)
Cash flows from financing activities
Proceeds from sales of Class A ordinary shares, net of offering costs	139,855	0
Payments on finance leases	(26)	(26)
Net cash flows provided by (used in) financing activities	139,829	(26)
Net change in cash and cash equivalents	153,859	(246,699)
Cash, beginning of period	60,649	490,252
Cash, end of period	214,508	243,553
Supplemental disclosure of non-cash investing and financing activities:
Right of use assets obtained in exchange for lease obligations	2,621	714
Exchange of Class B ordinary shares	14,902	0
Impact of equity transactions and compensation on redeemable noncontrolling interest	16,708	380
Change in redemption value of noncontrolling interest	0	230,209
Equipment and facility expansion included in accounts payable and accrued expenses	$ 780	$ 689