Loss Per Share - Schedule of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Numerator:
Net loss	$ (20,971)	$ (11,912)
Accrual of preferred stock dividends		(2,111)
Net loss attributable to common stockholders	$ (20,971)	$ (14,023)
Denominator:
Weighted-average number of shares used in computed net loss per share − basic and diluted	43,084,978	1,462,759
Net loss per share attributable to common stockholders − basic and diluted	$ (0.49)	$ (9.59)