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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2020
Stock-Based Compensation  
Summary of activity under the entity's stock option plans

The following table summarizes activity under our stock option plans (shares in thousands):

Year Ended

December 31,

2020

    

    

Weighted-

Average

Stock Options

    

Shares

    

Exercise Price

 

Outstanding at beginning of year

 

382

$

27.06

Granted

 

$

Exercised

 

(114)

$

18.85

Forfeited

 

$

Expired

 

$

Outstanding at end of year

 

268

$

30.53

Options exercisable at end of year

 

241

Summary information about stock options outstanding

The following table summarizes information about stock options outstanding at December 31, 2020 (shares in thousands):

Options Outstanding

Options Exercisable

 

    

    

Weighted-

    

 

Average

 

Number

Remaining

Weighted-

Number

Weighted-

 

Outstanding at

Contractual

Average

Exercisable at

Average

 

Range of Exercise Prices

    

12/31/2020

    

Life (in years)

    

Exercise Price

    

12/31/2020

    

Exercise Price

 

$11.21 - $15.00

 

14

 

2.2

$

13.76

 

14

$

13.76

$15.01 - $35.00

 

130

 

4.4

$

23.54

 

130

$

23.54

$35.01 - $42.50

 

124

 

6.8

$

39.78

 

97

$

39.02

$11.21 - $42.50

 

268

 

5.4

$

30.53

 

241

$

29.18

Schedule of fair values and the assumptions used for the grants

 

    

2018

 

Weighted-average fair value per share of options granted

$

13.06

Fair value assumptions:

Expected dividend yield

0.79%

Expected stock price volatility

31.7%

Risk-free interest rate

2.66%

Expected term

 

5.3 years

Summary of information about nonvested stock option awards and changes

The following table summarizes information about nonvested stock option awards as of December 31, 2020 and changes for the year ended December 31, 2020 (shares in thousands):

    

    

Weighted-Average

Grant Date

Stock Options

    

Shares

    

Fair Value

 

Nonvested at December 31, 2019

 

81

$

12.53

Granted

 

$

Vested

 

(54)

$

12.26

Forfeited

 

$

Nonvested at December 31, 2020

 

27

$

13.06

Summary of activity under the entity's restricted stock plans

The following table summarizes activity under our restricted stock plans (shares in thousands):

Year Ended

December 31,

2020

Weighted

Average Grant

Restricted Stock and Restricted Stock Units

    

Shares

    

Date Fair Value

 

Unvested at beginning of year

 

91

$

47.58

Granted

 

118

$

39.03

Vested

 

(85)

$

39.13

Forfeited

 

(4)

$

45.21

Unvested at end of year

 

120

$

45.21