Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

Stock-Based Compensation [Abstract]

Details Of Weighted-Average Grant-Date Fair Values And Assumptions Used For Estimating Fair Values

	Stock Options
Weighted-average grant-date fair value	$	8.91
Expected life, in years		5.4
Risk-free interest rate		2.7	%
Expected volatility		39.7	%