Quarterly report pursuant to Section 13 or 15(d)

Stock Incentive Plan - Schedule of Weighted-Average Assumptions Used to Estimate Fair Value of Stock Options and Restricted Stock Awards using Black-Scholes Option Valuation Model (Detail)

v3.20.2
Stock Incentive Plan - Schedule of Weighted-Average Assumptions Used to Estimate Fair Value of Stock Options and Restricted Stock Awards using Black-Scholes Option Valuation Model (Detail)
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]      
Expected volatility 50.45% 53.96% 50.07%
Expected dividends 15.75% 7.30% 14.91%
Expected term (in years) 7 years 8 months 12 days 7 years 7 months 6 days 7 years 8 months 12 days
Risk-free interest rate 1.71% 1.14% 1.83%