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Share-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of share-based compensation expense
The following table summarizes share-based compensation expense:
(in thousands)
2014
 
2013
 
2012
Restricted stock/PBRS
$
2,495

 
$
3,073

 
$
3,267

Performance unit incentive plan (“PUP”)
359

 
1,864

 
2,922

Restricted stock units/PBRS units
76

 
177

 
450

Stock options
—

 
107

 
593

Total share-based compensation before income tax benefit
2,930

 
5,221

 
7,232

Income tax benefit
(1,102
)
 
(1,936
)
 
(2,574
)
Total share-based compensation, net of income tax benefit
$
1,828

 
$
3,285

 
$
4,658
Summary of restricted stock and PBRS activity
Restricted Stock and PBRS. The following table summarizes restricted stock and PBRS activity:
 
Restricted Stock
 
PBRS
 
Shares
 
Weighted-Average
Grant Date
Fair Value
 
Shares
 
Weighted-Average
Grant Date
Fair Value
Balance at December 31, 2011
572,022

 
$
20.36

 
416

 
$
15.36

Granted
168,050

 
20.46

 
—

 
—

Vested
(219,571
)
 
18.26

 
(416
)
 
15.36

Forfeited
(4,150
)
 
24.80

 
—

 
—

Balance, December 31, 2012
516,351

 
21.25

 
—

 


Granted
101,300

 
27.27

 
—

 
—

Vested
(166,320
)
 
20.83

 
—

 


Forfeited
(20,432
)
 
22.13

 
—

 
—

Balance, December 31, 2013
430,899

 
22.78

 
—

 
—

Granted
128,700

 
23.79

 
—

 
—

Vested
(197,671
)
 
22.51

 
—

 
—

Forfeited
(33,326
)
 
23.13

 
—

 
—

Balance, December 31, 2014
328,602

 
23.30

 
—

 
—
Summary of liability based award activity
Liability-Based Awards. The following table summarizes the liability-based award activity:
 
PUP Awards
 
Restricted Stock Units
 
PBRS Units
 
Units
 
Weighted-Average
Grant Date
Fair Value
 
Units
 
Weighted-Average
Grant Date
Fair Value
 
Units
 
Weighted-Average
Grant Date
Fair Value
Balance at December 31, 2011
95,500

 
$
23.02

 
38,600

 
$
19.07

 
1,956

 
$
15.36

Granted
115,100

 
20.60

 
15,850

 
20.57

 
—

 
—

Vested
—

 
—

 
(13,100
)
 
15.36

 
(1,956
)
 
15.36

Forfeited
—

 
—

 
(850
)
 
20.89

 
—

 
—

Balance, December 31, 2012
210,600

 
21.70

 
40,500

 
20.82

 
—

 


Granted
93,100

 
27.35

 
8,600

 
27.35

 
—

 
—

Vested
—

 
—

 
(11,300
)
 
19.10

 
—

 
—

Forfeited
(3,932
)
 
21.15

 
(9,240
)
 
22.55

 
—

 
—

Balance, December 31, 2013
299,768

 
23.46

 
28,560

 
22.91

 
—

 
—

Granted
123,300

 
23.71

 
7,200

 
24.87

 
—

 
—

Vested
(94,600
)
 
23.01

 
(9,890
)
 
23.45

 
—

 
—

Forfeited
(61,348
)
 
24.43

 
(500
)
 
27.32

 
—

 
—

Balance, December 31, 2014
267,120

 
23.51

 
25,370

 
23.17

 
—

 
—
Summary of stock option activity
Stock Options. The following table summarizes stock option activity:
 
Shares
 
Weighted-
Average
Exercise Price
 
Options
Exercisable
Options outstanding at December 31, 2011
584,201

 
23.32

 
396,688

Exercised
(12,099
)
 
19.41

 
 
Forfeited or expired
(208,206
)
 
25.81

 
 
Options outstanding at December 31, 2012
363,896

 
22.03

 
276,009

Exercised
(59,543
)
 
19.42

 
 
Forfeited or expired(1)
(15,853
)
 
40.45

 
 
Award modification
25,823

 
N/A

 
 
Options outstanding at December 31, 2013
314,323

 
19.79

 
314,323

Exercised
(66,076
)
 
18.53

 
 
Forfeited or expired
(18,522
)
 
35.28

 
 
Award modification
17,865

 
N/A

 
 
Options outstanding at December 31, 2014
247,590

 
17.82

 
247,590
Summary of information on stock options outstanding and exercisable
The following table summarizes information concerning stock options outstanding and exercisable as of December 31, 2014:
 
Options Outstanding
 
Options Exercisable
 
 
 
Weighted-Average
Remaining Contractual Life (in years)
 
Weighted-
Average Exercise Price
 
 
 
Weighted-
Average Exercise Price
Range of Exercise Prices:
Shares
 
 
 
Shares
 
$16.62
224,137

 
3.8
 
$
16.62

 
224,137

 
$
16.62

$29.27
23,453

 
0.2
 
29.27

 
23,453

 
29.27

$16.62 to $29.27
247,590

 
3.5
 
17.82

 
247,590

 
17.82
Summary of additional information on stock options
Additional information pertaining to stock options is provided in the table below:
(in thousands)
2014
 
2013
 
2012
Total intrinsic value of stock options outstanding
$
2,251

 
$
2,723

 
$
2,329

Total intrinsic value of stock options exercised
$
1,616

 
$
1,611

 
$
296

Fair value of stock options vested
$
—

 
$
532

 
$
539

Cash received from the exercise of stock options
$
1,155

 
$
777

 
$
248

Tax benefits realized for tax deductions related to stock option exercises and performance-based awards
$
461

 
$
404

 
$
96