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Stockholders' Equity (Weighted Average Assumptions) (Details) - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Dividend yield       1.67%
Expected volatility       38.54%
Risk-free interest rate       0.25%
Expected holding period (years)       3 years 8 months 26 days
Black-Scholes value $ 4.61     $ 4.61
ESPP        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Dividend yield       0.01%
Expected volatility       48.63%
Risk-free interest rate 1.57% 1.57% 1.54%  
Expected holding period (years) 9 months 6 months 3 months