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Share-based Compensation (Tables)
 3 Months Ended
Mar. 31, 2019
Share-based Compensation [Abstract]  
Schedule of Assumptions Used

For the three months ended March 31, 2018, the weighted average input assumptions used were as follows:

 

 

 

2018

Expected term (in years)

6.4

Risk-free interest rate
2.64%

Expected volatility
33.31%

Dividend yield
2.88%

 

Schedule of Share-based Compensation, Stock Options, Activity

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

 

 

 

 

 

 

 

 

 

 

 

 

 

Three months ended March 31,

 

 

2019

 

2018

 

 

Shares

 

Weighted-Average Exercise Price

 

Shares

 

Weighted-Average Exercise Price

 

(shares in thousands)

 

 

 

 

 

 

 

 

 

 

Outstanding at beginning of period

107

 

$

49.26

 

106

 

$

31.18

 

Granted

 -

 

 

 -

 

51

 

 

66.68

 

Exercised

(10)

 

 

27.86

 

(21)

 

 

28.87

 

Outstanding at end of the period

97

 

$

52.51

 

136

 

$

44.79

 

Exercisable at end of the period

53

 

$

40.97

 

60

 

$

29.94

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Restricted Stock Activity

The following table summarizes our restricted stock activity:

 

 

 

 

 

 

 

 

 

 

 

Three months ended March 31,

 

2019

 

2018

 

Shares

 

Weighted-Average Grant Date Fair Value

 

Shares

 

Weighted-Average Grant Date Fair Value

(shares in thousands)

 

 

 

 

 

 

 

 

 

Outstanding at beginning of period

57

 

$

50.55

 

129

 

$

32.15

Granted

27

 

 

130.59

 

16

 

 

66.68

Vested

(21)

 

 

33.92

 

(69)

 

 

28.35

Outstanding at end of the period

63

 

$

90.60

 

76

 

$

42.99