Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans - Fair Value of Options Granted (Details)

v3.20.2
Benefit Plans - Fair Value of Options Granted (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2020
Sep. 30, 2019
Retirement Benefits [Abstract]      
Risk-free interest rate 0.20% 1.30% 2.50%
Expected life of options — years 3 years 9 months 14 days 3 years 9 months 25 days 3 years 4 months 9 days
Expected stock price volatility 34.00% 25.00% 26.00%
Expected dividend yield 0.90% 0.70% 0.80%