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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)

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Weighted-

    

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Weighted-

 

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Average

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Aggregate

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Average

 

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Stock

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Exercise

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Intrinsic

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Restricted

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Grant-Date

 

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Options

    

Price

    

Value

    

Stock

    

Fair Value

 

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

 

68,200

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$

68.81

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$

1,466

 

18,470

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$

84.26

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Granted

 

9,900

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105.28

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86

 

18,823

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103.99

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Exercised (stock options); vested (restricted stock)

 

(32,000)

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66.88

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1,128

 

(18,618)

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86.57

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Forfeited

 

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—

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—

 

(154)

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81.93

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

 

46,100

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$

77.98

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$

1,661

 

18,521

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$

103.10

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Exercisable at December 31, 2020

 

46,100

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$

77.98

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$

1,661

 

n/a

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n/a

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2020

    

2019

    

2018

 

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

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$

31.30

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$

20.47

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$

17.74

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Weighted-average remaining contractual life for stock options in years

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6.74

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6.64

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6.87

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Total fair value of stock options vested during the year

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$

310

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$

203

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$

176

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Total intrinsic value of stock options exercised during the year

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$

1,128

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$

57

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$

447

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Total fair value of restricted stock vested during the year

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$

1,612

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$

1,303

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$

1,327

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