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Shared-based Compensation (Tables)
 6 Months Ended
Jun. 30, 2018
Share-based Compensation [Abstract]  
Schedule of Assumptions Used

The weighted average input assumptions used were as follows:







 

 

 



Six months ended June 30,



2018

 

2017



 

 

 

Expected term (in years)

 6.4 

 

 6.0 

Risk-free interest rate

 2.62% 

 

 2.05% 

Expected volatility

 33.30% 

 

 38.33% 

Dividend yield

 2.87% 

 

 2.40% 



Schedule of Share-based Compensation, Stock Options, Activity

The following table is a summary of our stock option activity:







 

 

 

 

 

 

 

 

 

 



Six months ended June 30,

 



2018

 

2017

 



Shares

 

Weighted-Average Exercise Price

 

Shares

 

Weighted-Average Exercise Price

 

(shares in thousands)

 

 

 

 

 

 

 

 

 

 

Outstanding at beginning of period

 106 

 

$

 31.18 

 

 129 

 

$

 28.22 

 

Granted

 51 

 

 

 67.50 

 

 38 

 

 

 44.73 

 

Exercised

 (21)

 

 

 28.87 

 

 (21)

 

 

 27.38 

 

Forfeited

 -

 

 

 -

 

 (16)

 

 

 36.48 

 

Outstanding at end of the period

 136 

 

$

 45.17 

 

 130 

 

$

 32.10 

 

Exercisable at end of the period

 60 

 

$

 29.94 

 

 63 

 

$

 28.15 

 



Restricted Stock Activity

The following table summarizes our restricted stock activity: 







 

 

 

 

 

 

 

 

 



Six months ended June 30,



2018

 

2017



Shares

 

Weighted-Average Grant Date Fair Value

 

Shares

 

Weighted-Average Grant Date Fair Value

(shares in thousands)

 

 

 

 

 

 

 

 

 

Outstanding at beginning of period

 129 

 

$

 32.15 

 

 215 

 

$

 27.69 

Granted

 17 

 

 

 70.67 

 

 44 

 

 

 44.73 

Vested

 (85)

 

 

 31.59 

 

 (58)

 

 

 26.35 

Forfeited

 -

 

 

 -

 

 (8)

 

 

 35.23 

Outstanding at end of the period

 61 

 

$

 43.71 

 

 193 

 

$

 31.66