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Stock-Based Compensation (Assumptions for Black-Scholes Option Pricing Model) (Details) - Stock options [Member]
12 Months Ended
Dec. 31, 2019
Assumptions for Black-Scholes Option Pricing Model [Line Items]  
Expected life (years): 7 years 4 months 24 days
Expected volatility 35.10%
Dividend yield 0.35%
Risk-free interest rate 2.87%