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Stock-Based Compensation Plans (Tables)
 6 Months Ended
Jun. 30, 2022
Share-Based Payment Arrangement [Abstract]  
Stock-Based Compensation Expense

Total stock-based compensation expense was as follows:

 

 

 

Three Months Ended June 30,

 

 

Six Months Ended June 30,

 

 

 

2022

 

 

2021

 

 

2022

 

 

2021

 

 

 

(In thousands)

 

Employees

 

$

6,059

 

 

$

5,920

 

 

$

13,701

 

 

$

13,023

 

Non-employee directors

 

 

444

 

 

 

214

 

 

 

901

 

 

 

535

 

Total stock-based compensation

 

$

6,503

 

 

$

6,134

 

 

$

14,602

 

 

$

13,558