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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2020
Stock-Based Compensation  
Summary of the Company's stock option and restricted stock activity (in thousands)

    

    

Weighted-

    

    

    

Weighted-

 

Average

Aggregate

Average

 

Stock

Exercise

Intrinsic

Restricted

Grant-Date

 

    

Options

    

Price

    

Value

    

Stock

    

Fair Value

 

Outstanding (stock options); non-vested (restricted stock) at December 31, 2019

 

68,200

$

68.81

$

1,466

 

18,470

$

84.26

Granted

 

9,900

 

105.28

 

86

 

18,823

 

103.99

Exercised (stock options); vested (restricted stock)

 

(32,000)

 

66.88

 

1,128

 

(18,618)

 

86.57

Forfeited

 

 

 

 

(154)

 

81.93

Outstanding (stock options); non-vested (restricted stock) at December 31, 2020

 

46,100

$

77.98

$

1,661

 

18,521

$

103.10

Exercisable at December 31, 2020

 

46,100

$

77.98

$

1,661

 

n/a

 

n/a

    

2020

    

2019

    

2018

 

Weighted-average fair value of stock options granted during the year

$

31.30

$

20.47

$

17.74

Weighted-average remaining contractual life for stock options in years

 

6.74

 

6.64

 

6.87

Total fair value of stock options vested during the year

$

310

$

203

$

176

Total intrinsic value of stock options exercised during the year

$

1,128

$

57

$

447

Total fair value of restricted stock vested during the year

$

1,612

$

1,303

$

1,327