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RESTRICTED STOCK UNITS, STOCK OPTIONS, AND STOCK APPRECIATION RIGHTS (SARs) (Tables)
 12 Months Ended
Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Compensation cost arising from share-based arrangements
Compensation cost arising from share-based arrangements is shown in the following table: 
 
Years Ended December 31,
 
2015
 
2014
 
2013
 
(In thousands)
Recognition of fair value of restricted stock units, stock options and SARs over vesting period; and issuance of stock
$
4,019

 
$
4,318

 
$
2,967

Contributions of stock to the Company’s 401(k) plan
3,729

 
1,764

 
2,355

Total share-based compensation expense
$
7,748

 
$
6,082

 
$
5,322
Summary of Restricted Stock Unit activity
A summary of restricted stock award activity for the year ended December 31, 2015 is as follows: 
 
Units
 
Weighted Average
Grant-Date Fair
Value
 
Unamortized
Compensation
Expense
(In thousands)
 
Non-vested at December 31, 2014
409,362

 
$
15.17

 
 
 
Granted
262,555

 
$
28.26

 
 
 
Vested
(256,937
)
 
$
11.27

 
 
 
Forfeited
(60,669
)
 
$
11.13

 
 
 
Non-vested at December 31, 2015
354,311

 
$
28.44

 
$
6,572

(1) 
____________________ 
(1)
Expected to be recognized over the next three years.
Additional information related to restricted stock units: 
Years Ended December 31:
Weighted
Average
Grant-Date
Fair Value
 
Total
Grant- Date
Fair Value of
Restricted Stock
Units that Vested
(In thousands)
2015
$
28.26

 
$
2,884

2014
$
30.67

 
$
3,536

2013
$
11.70

 
$
1,689
Summary of Stock Option activity
Information with respect to stock option activity for the year ended December 31, 2015, is as follows:
 
Stock Options
 
Weighted
Average
Exercise Price
 
Weighted
Average
Remaining
Contractual
Life
(In years)
 
Aggregate
Intrinsic
Value
(In thousands)
 
Unamortized
Compensation
Expense
(In thousands)
Outstanding at December 31, 2014
110,806

 
$
22.15

 
 
 
 
 
 
Exercised
—

 


 
 
 
 
 
 
Expired
(1,500
)
 
$
21.40

 
 
 
 
 
 
Outstanding and exercisable at December 31, 2015
109,306

 
$
22.16

 
2.2

 
$
—

 
$
—

Additional information related to stock options: 
Years Ended December 31:
Intrinsic Value of
Stock Options
Exercised
2015
$
—

2014
$
11.81

2013
$
—
Summary of Stock Appreciation Rights
Information with respect to SARs granted and outstanding for the year ended December 31, 2015 is as follows:
 
SARs
 
Weighted
Average Exercise Price
 
Weighted
Average
Remaining
Contractual
Life
(In years)
 
Aggregate
Intrinsic
Value
(In thousands)
 
Unamortized
Compensation
Expense
(In thousands)
Outstanding at December 31, 2014
16,943

 
$
25.44

 
 
 
 
 
 
Exercised
—

 


 
 
 
 
 
 
Expired
—

 


 
 
 
 
 
 
Outstanding and exercisable at December 31, 2015
16,943

 
$
25.44

 
0.4

 
$
—

 
$
—


Additional information related to SARs: 
Years Ended December 31:
Intrinsic Value of
SARs
Exercised
2015
$
—

2014
$
11.50

2013
$
—