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Employee Stock Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Abstract]  
Stock Options Activity
Information with respect to our stock option activity for 2017, 2016 and 2015 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, 2015
 
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

Granted
 
249,392

 
$
11.74

 
 
 
 
Exercised
 
(33,389
)
 
$
13.96

 
 
 
$
17

Canceled
 
(98,676
)
 
$
19.42

 
 
 
 
Outstanding balance at December 31, 2017
 
762,550

 
$
16.91

 
7.0
 
$
64

Exercisable at December 31, 2017
 
333,761

 
$
19.26

 
4.8
 
$
35

The following table summarizes non-qualified stock option disclosures for 2017, 2016 and 2015:
Year ended December 31,
(dollars in thousands, except options and assumptions)

2017

2016

2015
Stock options granted

249,392


351,590


108,297

Stock option compensation expense included in the Consolidated Statements of Operations

$
690


$
705


$
1,674

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

$
3.00


$
4.20


$
14.72

Weighted-average assumptions for stock option grants:









Risk-free interest

2.07%

1.30%

1.68%
Expected term

5.8 years

6.3 years

6.4 years
Expected volatility

38.54%

33.14%

39.92%
Dividend yield

4.32%

2.69%

1.16%
Schedule of Nonvested Stock Option Activity
The following table summarizes our nonvested stock option activity for 2017, 2016 and 2015:
Nonvested Stock Options

Shares

Weighted-Average
Value (per Share)
Nonvested at January 1, 2015

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

Granted

249,392


$
3.00

Vested

(108,449
)

$
6.69

Forfeited

(57,089
)

$
6.23

Nonvested at December 31, 2017

428,789


$
4.16
Stock Appreciation Rights Activity
The following table summarizes stock appreciation rights disclosures for 2017, 2016 and 2015:
Year ended December 31,
(dollars in thousands, except stock appreciation rights and assumptions)
 
2017
 
2016
 
2015
Stock appreciation rights granted
 
26,839

 
—

 
—

Stock appreciation rights compensation expense (benefit) included in the Consolidated Statements of Operations
 
$
39

 
$
(462
)
 
$
(273
)
Weighted-average grant-date fair value of stock appreciation rights granted using the Black-Scholes model
 
$
0.19

 


 


Weighted-average assumptions for stock appreciation rights granted:
 
 
 
 
 
 
Risk-free interest
 
2.17%
 

 

Expected term
 
4.5 years
 

 

Expected volatility
 
38.93%
 

 

Dividend yield
 
6.10%
 

 

Information with respect to our stock appreciation right activity for 2017, 2016 and 2015 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, 2015
 
244,229

 
$
21.27

 
9.0
 
$
2,483

Outstanding balance at December 31, 2015
 
244,229

 
$
21.27

 
8.0
 
$
14

Outstanding balance at December 31, 2016
 
244,229

 
$
21.27

 
0.1
 
$
4

Granted
 
26,839

 
$
17.19

 
 
 
 
Exercised
 
(7,060
)
 
$
7.16

 
 
 
$
56

Canceled
 
(240,829
)
 
$
21.29

 
 
 
 
Outstanding balance at December 31, 2017
 
23,179

 
$
20.66

 
5.2
 
$
—

Exercisable at December 31, 2017
 
19,999

 
$
20.29

 
5.0
 
$
—
Schedule of Non-vested Stock Appreciation Rights Activity
The following table summarizes our non-vested stock appreciation rights for 2017, 2016 and 2015:
Nonvested Stock Appreciation Rights
 
Shares
 
Weighted-Average
Value (per Share)
Nonvested at January 1, 2015
 
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

Granted
 
26,839

 
$
0.19

Vested
 
(24,809
)
 
$
0.29

Nonvested at December 31, 2017
 
3,180

 
$
1.32
Restricted Stock Units Award Activity
A summary of the activity for stock and restricted stock units under the Omnibus Plans for 2017, 2016 and 2015 is presented below:
Year ended December 31,
(dollars in thousands, except share amounts)
 
2017
 
2016
 
2015
Beginning nonvested balance
 
283,188

 
315,434

 
232,824

Granted
 
278,351

 
298,909

 
219,010

Vested
 
(154,995
)
 
(165,372
)
 
(113,319
)
Forfeited
 
(52,340
)
 
(165,783
)
 
(23,081
)
Ending nonvested balance
 
354,204

 
283,188

 
315,434

 
 
 
 
 
 
 
Weighted-average grant-date fair value per restricted stock unit
 
$
10.38

 
$
16.22

 
$
35.93

 
 
 
 
 
 
 
Compensation expense
 
$
2,682

 
$
3,019

 
$
4,199
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)
 
2017
 
2016
 
2015
Beginning nonvested balance
 
17,067

 
116,712

 
115,687

Granted
 
—

 
16,299

 
1,025

Vested
 
(5,080
)
 
(115,944
)
 
—

Forfeited
 
(1,092
)
 
—

 
—

Ending nonvested balance
 
10,895

 
17,067

 
116,712

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

 
$
3.57

 
$
36.96

 
 
 
 
 
 
 
Compensation expense
 
$
49

 
$
1,504

 
$
317