Net Loss per Share - Schedule of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share [Abstract]
Net loss		$ (213,361)	$ (339,567)	$ (587,756)
Net loss attributable to Common Stockholders		$ (213,361)	$ (339,567)	$ (587,756)
Basic weighted average number of common shares and common share equivalents outstanding (in shares)	[1]	482,176,127	476,244,262	412,922,424
Diluted weighted average number of common shares and common share equivalents outstanding (in shares)	[1]	482,176,127	476,244,262	412,922,424
Net loss per share attributable to Common Stockholders—basic (in dollars per share)	[1]	$ (0.44)	$ (0.71)	$ (1.42)
Net loss per share attributable to Common Stockholders—diluted (in dollars per share)	[1]	$ (0.44)	$ (0.71)	$ (1.42)

[1] (1) Because the Company had a Net loss during the years ended December 31, 2023, 2022, and 2021, the Company's potentially dilutive securities, which include stock options, restricted stock units, preferred stock, and warrants to purchase shares of common stock and preferred stock, have been excluded from the computation of diluted net loss per share, as the effect would be anti-dilutive.