Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Tax at federal statutory rate	$ (64,270)	$ (65,922)	$ (40,387)
State taxes, net of federal effect	246	374	107
Impact of noncontrolling interest	1,222	2,872	6,074
Elimination of acquiree deferred taxes	0	0	2,149
Non-U.S. tax effect	1,067	(387)	412
Nondeductible expenses and losses	5,239	2,258	1,311
Stock-based compensation	3,222	7,019	5,307
Loss on debt extinguishment	0	0	0
U.S. tax on foreign earnings (GILTI)	86	2,525	59
(Gain) loss on SK Equity Transaction	11,811	(3,932)	2,292
Acquisition contingent liability	0	0	(762)
Change in valuation allowance	43,271	56,290	24,484
Provision for income taxes	$ 1,894	$ 1,097	$ 1,046

Effective Income Tax Rate Reconciliation, Acquisition Contingent Liability, Amount

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Amount of reported income tax expense from difference to expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to global intangible low-taxed income (GILTI).

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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