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Equity-Based Compensation - (Tables)
 12 Months Ended
Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Equity based compensation expense
Equity-based compensation expense, the corresponding tax benefit and net equity-based compensation expense for 2014, 2013 and 2012 are as follows:
 
2014
 
2013
 
2012
(amounts in thousands)
 
 
 
 
 
Equity-based compensation expense
$
3,088

 
$
2,647

 
$
2,236

Tax benefit
1,098

 
935

 
788

Net equity-based compensation expense
$
1,990

 
$
1,712

 
$
1,448
Fair Value Weighted-Average Assumptions
The fair value of the options at the date of grant was estimated using the following weighted-average assumptions for the years ended December 31, 2014, 2013 and 2012:
 
2014
 
2013
 
2012
Expected life (years)
4.1

 
2.7

 
2.7

Dividend yield
1.4
%
 
1.0
%
 
0.0
%
Risk-free interest rate
1.2
%
 
0.4
%
 
0.4
%
Expected volatility
48.0
%
 
44.4
%
 
61.3
%
Summary of stock option activity under the 2010 Plan and Equity Plan
A summary of stock option activity under the 2010 Plan and Equity Plan is as follows:
 
2010 Plan
Options
 
Weighted-
Average
Exercise
Price
 
Equity Plan
Options
 
Weighted-
Average
Exercise
Price
Outstanding at December 31, 2011
265,500

 
$
12.89

 
3,175,075

 
$
4.49

Granted
225,596

 
$
14.41

 
—

 
$
—

Exercised
(20,750
)
 
$
13.53

 
(574,353
)
 
$
3.58

Canceled or forfeited
(9,000
)
 
$
13.55

 
(13,175
)
 
$
5.42

Expired
—

 
$
—

 
(3,000
)
 
$
3.56

Outstanding at December 31, 2012
461,346

 
$
13.59

 
2,584,547

 
$
4.68

Granted
207,000

 
$
21.03

 
—

 
$
—

Exercised
(2,875
)
 
$
13.50

 
(107,775
)
 
$
4.93

Canceled or forfeited
(5,000
)
 
$
13.18

 
(2,000
)
 
$
5.92

Expired
—

 
$
—

 
(2,625
)
 
$
3.45

Outstanding at December 31, 2013
660,471

 
$
15.93

 
2,472,147

 
$
4.67

Granted
107,000

 
$
16.93

 
—

 
$
—

Exercised
(5,000
)
 
$
13.18

 
(601,800
)
 
$
4.23

Canceled or forfeited
(130,625
)
 
$
17.02

 
—

 
$
—

Expired
—

 
$
—

 
(1,750
)
 
$
4.34

Outstanding at December 31, 2014
631,846

 
$
15.89

 
1,868,597

 
$
4.82

Options Exercisable at December 31, 2014
477,722

 
$
15.56

 
1,868,597

 
$
4.82
Summary of restricted stock activity under the Equity Plan and the 1991 Restricted Stock Plan
A summary of restricted stock activity under the Equity Plan and the 1991 Restricted Stock Plan is as follows:
 
Equity Plan
Restricted
Stock
 
Weighted-
Average
Fair Value
 
1991
Restricted
Stock Plan
 
Weighted-
Average
Fair Value
Outstanding at December 31, 2011
221,500

 
$
5.01

 
262,375

 
$
9.57

Granted
—

 
$
—

 
127,500

 
$
15.04

Released
(40,000
)
 
$
4.97

 
(90,626
)
 
$
8.38

Canceled or forfeited
—

 
$
—

 
(7,500
)
 
$
11.14

Outstanding at December 31, 2012
181,500

 
$
5.02

 
291,749

 
$
12.29

Granted
—

 
$
—

 
98,000

 
$
20.68

Released
(40,000
)
 
$
4.97

 
(106,626
)
 
$
10.77

Canceled or forfeited
—

 
$
—

 
(1,600
)
 
$
18.04

Outstanding at December 31, 2013
141,500

 
$
5.04

 
281,523

 
$
15.75

Granted
—

 
$
—

 
125,200

 
$
16.62

Released
—

 
$
—

 
(193,652
)
 
$
15.26

Canceled or forfeited
—

 
$
—

 
(39,838
)
 
$
16.71

Outstanding at December 31, 2014
141,500

 
$
5.04

 
173,233

 
$
16.70
Summary of stock options outstanding for the 2010 Plan and Equity Plan
A summary of stock options that were outstanding at December 31, 2014 for the 2010 Plan and the Equity Plan is as follows:
Range of Exercise Prices:
Number of
Options Outstanding
 
Weighted
Average
Exercise Price
 
Weighted
Average
Remaining
Contractual Life in Years
 
Aggregate
Intrinsic Value
2010 Plan
 
 
 
 
 
 
 
$12.16 - $13.75
314,250

 
$
13.10

 
9.3
 
$
—

$15.04 - $16.93
148,096

 
$
15.84

 
8.2
 
—

$20.68 - $21.41
169,500

 
$
21.11

 
11.1
 
—

 
631,846

 
$
15.89

 
9.5
 
$
—

Equity Plan
 
 
 
 
 
 
 
$2.35 - $3.26
292,500

 
$
3.20

 
4.0
 
$
1,852,825

$3.48 - $4.90
1,007,972

 
$
4.54

 
3.0
 
5,032,901

$5.25 - $7.18
568,125

 
$
6.14

 
5.3
 
1,923,534

 
1,868,597

 
$
4.82

 
3.9
 
$
8,809,260
Summary of stock options that are exercisable for the 2010 Plan and the Equity Plan
A summary of stock options that are exercisable at December 31, 2014 for the 2010 Plan and the Equity Plan is as follows:
Range of Exercise Prices:
Number of
Options Exercisable
 
Weighted
Average
Exercise Price
 
Weighted
Average
Remaining
Contractual Life in Years
 
Aggregate
Intrinsic Value
2010 Plan
 
 
 
 
 
 
 
$12.16 - $13.75
289,750

 
$
13.16

 
9.7
 
$
—

$15.04 - $16.93
62,348

 
$
15.22

 
7.9
 
—

$20.68 - $21.41
125,624

 
$
21.26

 
12.2
 
—

 
477,722

 
$
15.56

 
10.1
 
$
—

Equity Plan
 
 
 
 
 
 
 
$2.35 - $3.26
292,500

 
$
3.20

 
4.0
 
$
1,852,825

$3.48 - $4.90
1,007,972

 
$
4.54

 
3.0
 
5,032,901

$5.25 - $7.18
568,125

 
$
6.14

 
5.3
 
1,923,534

 
1,868,597

 
$
4.82

 
3.9
 
$
8,809,260