Fair Value Measurements - Changes in Private Placement Warrants Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Adjustment of Warrants	$ (51,215)	$ 55,632
Stock Issued During Period, Value, Private Warrants Exercised	3,592
Warrants and Rights Outstanding	257,944		$ 312,751
Level 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warrants and Rights Outstanding	257,944	167,445	$ 312,751	$ 111,813
Level 3 | Recurring | Private Warrant
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Adjustment of Warrants	(51,215)	55,632
Stock Issued During Period, Value, Private Warrants Exercised	$ (3,592)	$ 0