Net Loss Per Share Attributable to Common Stockholders - Schedule of Anti-dilutive Securities Outstanding in Common Stock Equivalent Excluded from Computation of Diluted Weighted Average Shares Outstanding (Parenthetical) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Conversion of convertible notes to preferred stock	$ 0	$ 0	$ 0	$ 0