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Stock-Based Compensation Plans (Tables)
 9 Months Ended
Sep. 30, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Stock-Based Compensation Expense

Stock-based compensation expense for the three and nine months ended September 30, 2016 and 2015 was as follows:

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2016

 

 

 

2015

 

 

 

2016

 

 

 

2015

 

 

(In thousands)

 

Employees

$

3,387

 

 

$

2,958

 

 

$

9,963

 

 

$

8,596

 

Non-employee directors

 

312

 

 

 

294

 

 

 

673

 

 

 

680

 

Total stock-based compensation

$

3,699

 

 

$

3,252

 

 

$

10,636

 

 

$

9,276