Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Federal and state operating loss carryforwards	$ 242,584	$ 219,237
Equity compensation	26,243	22,735
Capitalized research and development	26,480	0
R&D tax credits, net of reserves	18,887	18,887
Disallowed interest	29,979	16,146
Temporary differences	8,340	7,695
Total deferred tax assets	352,513	284,700
Deferred tax liabilities:
Other	(400)	(546)
Total deferred tax liabilities	(400)	(546)
Valuation allowance	(352,113)	(284,154)
Net deferred tax assets	$ 0	$ 0