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Employee Stock Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Abstract]  
Stock Options Activity
Information with respect to our stock option activity for 2016, 2015 and 2014 is as follows:
Stock Options
 
Shares
 
Weighted-Average
Exercise Price
per Share
 
Weighted-Average
Remaining
Contractual Life
(In Years)
 
Aggregate
Intrinsic
Value
(in thousands)
Outstanding balance at January 1, 2014
 
988,780

 
$
14.07

 
5.0
 
$
6,856

Granted
 
233,054

 
$
23.92

 
 
 
 
Exercised
 
(363,459
)
 
$
12.57

 
 
 
$
5,218

Canceled
 
(24,365
)
 
$
20.58

 
 
 
 
Outstanding balance at December 31, 2014
 
834,010

 
$
17.28

 
6.7
 
$
11,808

Granted
 
108,297

 
$
36.90

 
 
 
 
Exercised
 
(241,122
)
 
$
13.85

 
 
 
$
5,722

Canceled
 
(44,514
)
 
$
25.43

 
 
 
 
Outstanding balance at December 31, 2015
 
656,671

 
$
21.22

 
6.8
 
$
2,103

Granted
 
351,590

 
$
17.23

 
 
 
 
Exercised
 
(100,813
)
 
$
13.90

 
 
 
$
379

Canceled
 
(262,225
)
 
$
23.73

 
 
 
 
Outstanding balance at December 31, 2016
 
645,223

 
$
19.17

 
6.6
 
$
1,407

Exercisable at December 31, 2016
 
300,288

 
$
18.43

 
4.3
 
$
816

The following table summarizes non-qualified stock option disclosures for 2016, 2015 and 2014:
Year ended December 31,
(dollars in thousands, except options and assumptions)

2016

2015

2014
Stock options granted

351,590


108,297


233,054

Stock option compensation expense included in the Consolidated Statements of Operations

$
705


$
1,674


$
1,591

Weighted-average grant-date fair value of options granted using the Black-Scholes model

$
4.20


$
14.72


$
10.86

Weighted average assumptions for stock option grants:






Risk-free interest

1.30%

1.68%

1.90%
Expected term

6.3 years

6.4 years

6.5 years
Expected volatility

33.14%

39.92%

42.81%
Dividend yield

2.69%

1.16%

0.00%
Schedule of Nonvested Stock Option Activity
The following table summarizes our nonvested stock option activity for 2016, 2015 and 2014:
Nonvested Stock Options

Shares

Weighted-Average
Value (per Share)
Nonvested at January 1, 2014

342,276


$
9.07

Granted

233,054


$
10.86

Vested

(113,550
)

$
9.37

Forfeited

(23,265
)

$
9.73

Nonvested at December 31, 2014

438,515


$
9.91

Granted

108,297


$
14.72

Vested

(161,923
)

$
10.55

Forfeited

(42,887
)

$
11.32

Nonvested at December 31, 2015

342,002


$
10.95

Granted

351,590


$
4.20

Vested

(169,703
)

$
9.42

Forfeited

(178,954
)

$
8.41

Nonvested at December 31, 2016

344,935


$
6.14
Stock Appreciation Rights Activity
The following table summarizes stock appreciation rights disclosures for 2016, 2015 and 2014:
Year ended December 31,
(dollars in thousands, except stock appreciation rights and assumptions)
 
2016
 
2015
 
2014
Stock appreciation rights granted
 
—

 
—

 
2,600

Stock appreciation rights compensation expense (credit) included in the Consolidated Statements of Operations
 
$
(462
)
 
$
(273
)
 
$
736

Weighted-average grant-date fair value of stock appreciation rights granted using the Black-Scholes model
 

 


 
$
10.45

Weighted average assumptions for stock appreciation rights granted:
 
 
 
 
 
 
Risk-free interest
 

 

 
1.92%
Expected term
 

 

 
6.5 years
Expected volatility
 

 

 
43.14%
Dividend yield
 

 

 
0.00%
Information with respect to our stock appreciation right activity for 2016, 2015 and 2014 is as follows:
Stock Appreciation Rights
 
Shares
 
Weighted Average Exercise Price
 
Weighted-Average
Remaining
Contractual Life
(In Years)
 
Aggregate
Intrinsic
Value
(in thousands)
Outstanding Balance at January 1, 2014
 
250,979

 
$
21.07

 
10
 
$
—

Granted
 
2,600

 
$
23.02

 
 
 
 
Exercised
 
(6,475
)
 
$
14.98

 
 
 
 
Canceled
 
(2,875
)
 
$
16.99

 
 
 
 
Outstanding balance at December 31, 2014
 
244,229

 
$
21.27

 
9
 
$
2,483

Outstanding balance at December 31, 2015
 
244,229

 
$
21.27

 
8
 
$
14

Outstanding balance at December 31, 2016
 
244,229

 
$
21.27

 
0.1
 
$
4

Exercisable at December 31, 2016
 
243,079

 
$
21.27

 
0.1
 
$
4
Schedule of Non-vested Stock Appreciation Rights Activity
The following table summarizes our non-vested stock appreciation rights for 2016, 2015 and 2014:
Nonvested Stock Appreciation Rights
 
Shares
 
Weighted-Average
Value (per Share)
Nonvested at January 1, 2014
 
248,041

 
$
10.36

Granted
 
2,600

 
$
10.45

Vested
 
(3,537
)
 
$
10.10

Forfeited
 
(2,875
)
 
$
9.66

Nonvested at December 31, 2014
 
244,229

 
$
10.37

Vested
 
(1,250
)
 
$
10.33

Nonvested at December 31, 2015
 
242,979

 
$
10.37

Vested
 
(241,829
)
 
$
10.38

Nonvested at December 31, 2016
 
1,150

 
$
9.88
Restricted Stock Units Award Activity
A summary of the activity for stock and restricted stock units under the Omnibus Plans for 2016, 2015 and 2014 is presented below:
Year ended December 31,
(dollars in thousands, except share amounts)
 
2016
 
2015
 
2014
Beginning nonvested balance
 
315,434

 
232,824

 
208,460

Granted
 
298,909

 
219,010

 
123,782

Vested
 
(165,372
)
 
(113,319
)
 
(92,070
)
Forfeited
 
(165,783
)
 
(23,081
)
 
(7,348
)
Ending nonvested balance
 
283,188

 
315,434

 
232,824

 
 
 
 
 
 
 
Weighted-average grant-date fair value per restricted stock unit
 
$
16.22

 
$
35.93

 
$
24.24

 
 
 
 
 
 
 
Compensation expense
 
$
3,019

 
$
4,199

 
$
2,340
Cash Settled Restricted Stock Units Award Activity
A summary of the activity for cash settled restricted stock units is presented below:
Year ended December 31,
(dollars in thousands, except share amounts)
 
2016
 
2015
 
2014
Beginning nonvested balance
 
116,712

 
115,687

 
—

Granted
 
16,299

 
1,025

 
115,687

Vested
 
(115,944
)
 
—

 
—

Ending nonvested balance
 
17,067

 
116,712

 
115,687

 
 
 
 
 
 
 
Weighted-average grant-date fair value per restricted stock unit
 
$
3.57

 
$
36.96

 
$
23.02

 
 
 
 
 
 
 
Compensation expense
 
$
1,504

 
$
317

 
$
616