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Incentive and Restricted Stock Plan and Dividend Reinvestment Plan (Tables)
12 Months Ended
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of Nonstatutory Stock Options Activity
The following table summarizes activity for nonstatutory stock options for the years ended December 31:
 
2015
 
2014
 
2013
 
Number
of Shares

Weighted
Average
Exercise
Price

Weighted
Average
Remaining
Contractual
Term
 
Number of
Shares

Weighted
Average
Exercise
Price

Weighted
Average
Remaining
Contractual
Term
 
Number of
Shares

Weighted
Average
Exercise
Price

Weighted
Average
Remaining
Contractual
Term
Outstanding at beginning of year
155,500

$
37.86

 
 
428,900

$
37.36

 
 
675,500

$
35.18

 
Granted


 
 


 
 


 
Exercised


 
 


 
 


 
Forfeited


 
 
(273,400
)
37.08

 
 
(246,600
)
31.39

 
Expired
(155,500
)
37.86

 
 


 
 


 
Outstanding at End of Year


0.0 years
 
155,500

$
37.86

1.0 year
 
428,900

$
37.36

1.4 years
Exercisable at End of Year


0.0 years
 
155,500

$
37.86

1.0 year
 
428,900

$
37.36

1.4 years
2003 Stock Plan  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of Non-Vested Restricted Stock
The following table provides information about restricted stock granted under the 2003 Stock Plan for the years ended December 31:
 
Restricted
Stock

 
Weighted Average
Grant Date
Fair Value

Non-vested at December 31, 2013
79,415

 
$
21.50

Granted

 

Vested
41,740

 
20.70

Forfeited
14,530

 
20.97

Non-vested at December 31, 2014
23,145

 
$
23.28

Granted

 

Vested
15,433

 
22.34

Forfeited
7,712

 
22.34

Non-vested at December 31, 2015

 
$

2014 Stock Plan  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of Non-Vested Restricted Stock
The following table provides information about restricted stock granted under the 2014 Stock Plan for the years ended December 31:
 
Restricted
Stock

 
Weighted Average
Grant Date
Fair Value

Non-vested at December 31, 2013

 
$

Granted
80,455

 
23.24

Vested
158

 
23.19

Forfeited
473

 
23.19

Non-vested at December 31, 2014
79,824

 
$
23.24

Granted
87,841

 
28.71

Vested
14,126

 
23.57

Forfeited
3,183

 
26.15

Non-vested at December 31, 2015
150,356

 
$
26.34