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Share-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2019
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The following table provides the assumptions used in the calculation of grant-date fair values of these stock options based on the Black-Scholes option pricing model:
Weighted-average grant-date fair value
$
8.09

Expected volatility
33.18
%
Risk-free interest rate
2.62
%
Expected dividend yield
5.40
%
Expected term in months
72