Stock Option Black Scholes Option Pricing Model Assumptions (Details) - Share-based Payment Arrangement, Option [Member]	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Expected volatility	41.50%	31.70%	32.10%	31.70%
Risk-free interest rate	0.30%	1.70%	1.30%	1.70%
Expected term (years)	5 years 3 months 18 days	6 years 1 month 6 days	5 years 3 months 18 days	6 years 1 month 6 days