Convertible Notes and Derivative Instrument - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2021	May 16, 2018	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Mar. 15, 2021
Debt Instrument [Line Items]
Principal amount			$ 1,898,278
Convertible notes
Debt Instrument [Line Items]
Principal amount		$ 502,000
Proceeds from debt		$ 507,000
Converted instrument, shares issued (in shares)	171,750,446
Effective interest rate (in percentage)				16.99%
Interest expense			20,000	$ 91,000	$ 76,000
Interest expense, excluding amortization			15,000	59,000	38,000
Amortization of debt discount			5,000	32,000	38,000
Convertible debt, equity fair value used to determine conversion						$ 6,300,000
Change in fair value of the derivative instrument			$ 0	$ 150,000	$ (37,000)