Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Tables)

v3.8.0.1
Stock-based Compensation (Tables)
 9 Months Ended
Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Assumption Used and Resulting Weighted Average Fair Value of Stock Option Granted
The grant date fair value of each option award is calculated using a lattice option-pricing valuation model, which incorporates a range of assumptions for inputs as follows:
 
2017
Expected volatility
23% to 30%
Weighted average expected volatility
24%
Expected term (in years)
6.3 to 7.7
Weighted average dividend yield
2.8%
Risk-free interest rate
0.7% to 2.4%
Weighted average fair value at date of grant
$9.90