Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred Tax Assets:
Net operating losses (“NOL”)	$ 353,839	$ 342,888
Research and development credits	4,239	4,239
Accrued liabilities	16,646	14,762
Capital loss	3,420	3,420
Amortization	9,921	11,284
Capitalized R&D expense	74,835	0
Stock-based compensation	418	3,385
Transaction costs	45	0
Other	594	1,278
Gross deferred tax assets	463,957	381,256
Valuation allowance	(426,003)	(361,804)	$ (256,413)
Deferred tax assets, net of valuation allowance	37,954	19,452
Deferred Tax Liabilities:
Depreciation	(14,113)	(290)
State taxes	(23,841)	(19,162)
Total deferred tax liabilities	(37,954)	(19,452)
Total net deferred tax assets (liabilities)	$ 0	$ 0