Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Significant unobservable inputs (Details)

v3.21.2
Fair Value Measurements - Significant unobservable inputs (Details) - $ / shares
9 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Fair Value Measurements    
Stock price on valuation date $ 9.27 $ 11.62
Exercise price per share $ 11.50 $ 11.50
Expected life 4 years 7 months 24 days 4 years 10 months 24 days
Volatility 85.90% 35.70%
Risk-free rate 0.90% 0.85%
Fair value of warrants $ 5.69 $ 3.78