Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Black-Scholes-Merton option-pricing model (Details)

v3.21.2
Stock-Based Compensation - Black-Scholes-Merton option-pricing model (Details)
6 Months Ended
Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]  
Risk - free interest rate (percentage), minimum 0.60%
Risk - free interest rate (percentage), maximum 1.10%
Expected volatility (percentage), minimum 42.10%
Expected volatility (percentage), maximum 43.60%
Expected term (years) 6 years 1 month 6 days