Fair Value Measurements - Summary of Assumptions Used to Record Fair Value of Warrants (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2021 $ / shares	Dec. 31, 2020 $ / shares
Stock Price
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Stock price	$ 4.47	$ 10.85
Risk-free interest rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants liability measurement input	0.80	0.35
Expected life (in years)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Expected life (in years)	4 years 2 months 8 days	4 years 11 months 8 days
Expected volatility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants liability measurement input	85.18	82.66