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Stock Compensation Plans and Share-Based Compensation Awards (Tables)
6 Months Ended
Jun. 30, 2022
Stock Compensation Plans and Share-Based Compensation Awards  
Summary of share based compensation expense and related income tax benefit recognized for share-based compensation awards

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Three Months Ended June 30, 

    

Six Months Ended June 30, 

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2022

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2021

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2022

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2021

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(In thousands) 

Share-based compensation expense

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$

7,707

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$

6,489

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$

14,710

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$

12,287

Income tax benefit

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$

(1,237)

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$

(963)

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$

(2,365)

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$

(1,921)

Summary of stock option activity

A summary of service-based stock option activity is as follows (in thousands, except per share and term data):

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Number of Options

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Weighted-average grant date fair value

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Weighted-average exercise price

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Weighted-average remaining contractual term

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Total intrinsic value

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Balance at December 31, 2021

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5,491

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$

8.11

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$

22.19

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​

7.67

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$

19,802

Granted

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—

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—

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—

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—

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Exercised

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(76)

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5.77

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15.07

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—

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​

635

Forfeited

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(87)

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9.17

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25.22

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—

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—

Balance at June 30, 2022

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5,328

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$

8.12

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22.23

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7.16

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$

14,536

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Exercisable at June 30, 2022

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3,695

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$

7.70

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$

20.72

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6.82

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$

14,502

Service-Based Restricted Stock Units  
Stock Compensation Plans and Share-Based Compensation Awards  
Summary of stock activity

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Number of RSUs

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Weighted-average grant date fair value

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Balance at December 31, 2021

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1,339

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$

24.35

Granted

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956

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23.60

Vested

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(547)

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22.37

Forfeited

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(38)

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​

24.24

Balance at June 30, 2022

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1,710

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$

24.55

Market and Service-Based Stock Options  
Stock Compensation Plans and Share-Based Compensation Awards  
Summary of assumptions used in estimating the grant date fair values

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Six Months Ended June 30, 

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2021

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Expected life (in years)

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7.00

Weighted-average risk-free interest rate

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1.15%

Expected volatility

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34.65%

Dividend yield

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0.00%

Exercise price

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$

25.46

Market and service-based performance stock units  
Stock Compensation Plans and Share-Based Compensation Awards  
Summary of assumptions used in estimating the grant date fair values

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Six Months Ended June 30, 

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2022

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Expected life (in years)

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3.10

Weighted-average risk-free interest rate

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1.74%

Expected volatility

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47.62%

Dividend yield

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0.00%

Estimated grant date fair value (per share)

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$

23.69