Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities
Net loss	$ (135,447)	$ (148,135)	$ (55,146)
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation and amortization	3,853	3,036	1,984
Equity-based compensation	30,846	74,469	699
Gain on marketable securities, net	(6,018)	0
Loss on disposal of equipment	23	0	0
Changes in operating assets and liabilities
Interest receivable	(1,375)	0
Prepaid and other assets	4,648	(7,231)	(5,704)
Accounts payable and accrued expenses	11,639	494	7,868
Income taxes payable	1,762	278	0
Net cash flows used in operating activities	(90,069)	(77,089)	(50,299)
Cash flows used in investing activities
Proceeds from sale of equipment	0	0	1
Net cash from SCS	0	108	0
Purchases of marketable securities	(471,604)	0	0
Sales of marketable securities	175,818	0	0
Purchase of equipment and facility expansion	(34,197)	(1,846)	(5,192)
Net cash flows used in investing activities	(329,983)	(1,738)	(5,191)
Cash flows from financing activities
Payments on finance leases	(52)	(32)	(30)
Proceeds from Business Combination, including PIPE financing, net of associated costs of $37,856	0	542,503	0
Borrowings under related party notes payable	0	35,000	0
Repurchase of Class A ordinary shares Amount	(9,499)	0	0
Repayment of related party notes payable	0	(35,000)	0
Net cash contribution	0	6,050	71,500
Net cash flows (used in) provided by financing activities	(9,551)	548,521	71,470
Net change in cash and cash equivalents	(429,603)	469,694	15,980
Cash, beginning of period	490,252	20,558	4,578
Cash, end of period	60,649	490,252	20,558
Supplemental Cash Flow Information [Abstract]
Cash paid during the period for income taxes, net of refunds	2,857	1,950	68
Supplemental disclosure of non-cash investing and financing activities:
Right of use assets obtained in exchange for lease obligations	2,594	1,491	0
Exchange of Class B ordinary shares	9,500	0	0
Impact of equity transactions and compensation on redeemable noncontrolling interest	2,577	5,828	0
Change in redemption value of noncontrolling interest	79	0
Equipment and facility expansion included in accounts payable and accrued expenses	$ 218	$ 51	$ 1,295