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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of restricted stock activity
The following table summarizes the restricted stock activity under the Company's equity incentive plans :
 
Number
of
Shares
 
Weighted
Average
Fair Value
Per Share
Nonvested at January 1, 2013
317,219

 
$
6.46

Granted
24,824

 
$
11.29

Vested
(124,998
)
 
$
7.17

Forfeited/repurchased shares
—

 
$
—

Nonvested at December 31, 2013
217,045

 
$
6.60

Granted
115,726

 
$
11.35

Vested
(96,908
)
 
$
7.35

Forfeited/repurchased shares
—

 
$
—

Nonvested at December 31, 2014
235,863

 
$
8.63

Granted
38,660

 
$
5.82

Vested
(134,545
)
 
$
6.84

Forfeited/repurchased shares
(19,824
)
 
$
11.35

Nonvested at December 31, 2015
120,154

 
$
9.28
Schedule of stock options activity
The following table summarizes the stock option activity under the Company's equity incentive plans:

 
Number
of
Shares
 
Weighted
Average
Exercise
Price
Per Share
 
Weighted
Average
Contractual
Life
(Years)
 
Aggregate
Intrinsic
Value
Outstanding at January 1, 2013
2,283,785

 
$
9.23

 
 
 
 

Granted
35,081

 
$
9.48

 
 
 
 

Exercised
(155,731
)
 
$
5.51

 
 
 
 

Forfeited
(91,378
)
 
$
9.82

 
 
 
 

Outstanding at December 31, 2013
2,071,757

 
$
9.49

 
 
 
 

Granted
233,828

 
$
11.35

 
 
 
 

Exercised
(143,282
)
 
$
6.08

 
 
 
 

Forfeited
(105,405
)
 
$
11.06

 
 
 
 

Outstanding at December 31, 2014
2,056,898

 
$
9.86

 
 
 
 

Granted
143,862

 
$
5.82

 
 
 
 

Exercised
(3,970
)
 
$
6.00

 
 
 
 

Forfeited
(46,890
)
 
$
11.72

 
 
 
 

Outstanding at December 31, 2015
2,149,900

 
$
9.56

 
 
 
 

 
 
 
 
 
 
 
 
Vested at December 31, 2015 and expected to vest
2,132,794

 
$
9.57

 
4.81
 
$
8,672

Exercisable at December 31, 2015
1,740,308

 
$
10.00

 
4.08
 
$
8,672
Schedule of stock option valuation assumptions
The Company calculates the fair value of each option on the date of grant using the Black-Scholes pricing model and the following weighted-average assumptions in each year:
 
2015
 
2014
 
2013
Weighted average grant-date fair value of options granted
$
5.82

 
$
6.40

 
$
4.11

Risk-free interest rate
0.97
%
 
1
%
 
1
%
Expected volatility
38
%
 
88.5
%
 
62.4
%
Expected term of options (in years)
3.0

 
3.0

 
3.2

Dividend yield
—
%
 
—
%
 
—
%
Schedule of intrinsic value of options exercised and fair value of shares vested
 
2015
 
2014
 
2013
Total intrinsic value of options exercised
$
17

 
$
494

 
$
804

Total fair value of shares vested
$
1,226

 
$
923

 
$
1,457