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Stock-Based Compensation Plans (Tables)
 12 Months Ended
Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Option Pricing Assumptions and Estimated Fair Value
The following table presents the option pricing assumptions and the estimated fair value of the options using these assumptions for grants made for the year ended:
 
December 31,
 
2017
 
2016
 
2015
Weighted-average dividend yield
—
%
 
3.12
%
 
3.01
%
Weighted-average risk-free interest rate
—
%
 
1.52
%
 
1.50
%
Weighted-average expected volatility
—
%
 
29.64
%
 
31.85
%
Weighted-average expected life (in years)
0.0

 
5.3

 
5.3

Weighted-average fair value of options granted
$
—

 
$
5.17

 
$
5.87
Schedule of Stock Option Activity
Stock option activity for the year ended December 31, 2017 was as follows:
 
 
Number of Options
 
Weighted-Average
Exercise Price per Option
 
Weighted-Average
Remaining
Contractual Term
(Years)
 
Aggregate Intrinsic Value
Options outstanding at January 1, 2017
 
58,743

 
$
20.38

 
  
 
 
Granted
 
—

 
—

 
  
 
  

Exercised
 
(11,841
)
 
17.50

 
  
 
  

Forfeited
 
(2,400
)
 
26.23

 
 
 
 
Expired
 
(1,425
)
 
23.11

 
 
 
 
Options outstanding at December 31, 2017
 
43,077

 
$
21.00

 
3.45
 
$
910

Options exercisable at December 31, 2017
 
39,627

 
$
20.58

 
3.11
 
$
854



A summary of the status of the Company’s nonvested stock options as of December 31, 2017 and changes during the year then ended was as follows:
 
Options
 
Weighted-Average
Grant Date
Fair Value per Option
Nonvested at January 1, 2017
9,450

 
$
6.59

Granted
—

 
—

Vested
(3,600
)
 
7.80

Forfeited
(2,400
)
 
5.48

Nonvested at December 31, 2017
3,450

 
$
6.11
Schedule of Compensation Expense
Compensation expense and the related income tax benefit recognized in connection with the MSPP awards was as follows for the periods indicated:
 
For The Year Ended
December 31,
  
2017
 
2016
 
2015
Compensation expense
$
97

 
$
102

 
$
66

Income tax benefit
21

 
36

 
23

Fair value of grants vested
91

 
57

 
92

Compensation expense and the related income tax benefit recognized in connection with the restricted stock awards was as follows for the periods indicated:
 
For The Year Ended
December 31,
  
2017
 
2016
 
2015
Compensation expense
$
762

 
$
703

 
$
327

Income tax benefit
164

 
246

 
114

Fair value of grants vested
702

 
603

 
341

Compensation expense recognized in connection with the DCRP was presented in the following table:
 
For The Year Ended
December 31,
  
2017
 
2016
 
2015
Compensation expense
$
97

 
$
81

 
$
62

Related income tax benefit
21

 
28

 
22

Fair value of grants vested
90

 
75

 
59

Compensation expense for the LTIP's performance-based awards was presented in the following table:
 
For The Year Ended
December 31,
  
2017
 
2016
 
2015
Compensation expense(1)
$
370

 
$
1,080

 
$
330

Related income tax benefit
80

 
378

 
116

Fair value of grants vested
843

 
725

 
412

Compensation expense and the related income tax benefit recognized in connection with the restricted stock units was as follows for the periods indicated:
 
For The Year Ended
December 31,
  
2017
 
2016
 
2015
Compensation expense
$
124

 
$
—

 
$
—

Income tax benefit
27

 
—

 
—

Fair value of grants vested
—

 
—

 
—
Summary of Nonvested Share Awards Activity
Restricted stock award activity for the year ended December 31, 2017 is as follows:
  
 
Number of Shares
 
Weighted-Average
Grant Date
Fair Value per Share
 
Weighted-Average
Remaining
Contractual Term
(Years)
 
Aggregate Intrinsic Value
 
Unrecognized
Compensation
Nonvested at January 1, 2017
 
47,518

 
$
28.16

 
  
 
  

 
 
Granted
 
16,185

 
42.39

 
  
 
  

 
 
Vested
 
(22,553
)
 
31.14

 
 
 
 
 
 
Forfeited
 
(4,825
)
 
28.93

 
 
 
 
 
 
Nonvested at December 31, 2017
 
36,325

 
$
32.56

 
2.2
 
$
1,530

 
$
787

DCRP award activity for the year ended December 31, 2017 was as follows:
  
 
Number of Deferred Stock Awards
 
Weighted-Average
Grant Date
Fair Value per Award
 
Weighted-Average
Remaining
Contractual Term
(Years)
 
Aggregate Intrinsic Value
 
Unrecognized
Compensation
Nonvested at January 1, 2017
 
14,244

 
$
23.65

 
  
 
  

 
 
Granted
 
2,772

 
42.66

 
  
 
  

 
 
Vested
 
(2,776
)
 
32.50

 
 
 
 
 
 
Forfeited
 
(4,192
)
 
25.88

 
 
 
 
 
 
Nonvested at December 31, 2017
 
10,048

 
$
25.52

 
9.2
 
$
423

 
$
229

MSPP award activity for the year ended December 31, 2017 was as follows:
  
 
Number of Shares
 
Weighted-Average
Grant Date
Fair Value per Share
 
Weighted-Average
Remaining
Contractual Term
(Years)
 
Aggregate Intrinsic Value
 
Unrecognized
Compensation
Nonvested at January 1, 2017
 
26,699

 
$
7.85

 
  
 
  

 
 
Granted
 
8,088

 
13.73

 
  
 
  

 
 
Vested
 
(11,777
)
 
7.73

 
 
 
 
 
 
Forfeited
 
(2,791
)
 
11.49

 
 
 
 
 
 
Nonvested at December 31, 2017
 
20,219

 
$
9.77

 
1.0
 
$
431

 
$
54

LTIP performance-based award activity for the year ended December 31, 2017 was as follows:
  
 
Number of Shares
 
Weighted-Average
Grant Date
Fair Value per Share
 
Weighted-Average
Remaining
Contractual Term
(Years)
 
Aggregate Intrinsic Value
 
Unrecognized
Compensation
Nonvested at January 1, 2017
 
52,737

 
$
27.01

 
  
 
  

 
 
Granted
 
16,830

 
41.39

 
  
 
  

 
 
Vested
 
(32,323
)
 
26.09

 
 
 
 
 
 
Forfeited
 
(5,621
)
 
26.97

 
 
 
 
 
 
Nonvested at December 31, 2017
 
31,623

 
$
35.60

 
1.7
 
$
1,332

 
$
291

Restricted stock unit activity for the year ended December 31, 2017 was as follows:
  
 
Number of Units
 
Weighted-Average
Grant Date
Fair Value per Unit
 
Weighted-Average
Remaining
Contractual Term
(Years)
 
Aggregate Intrinsic Value
 
Unrecognized
Compensation
Nonvested at January 1, 2017
 
—

 
$
—

 
  
 
  

 
 
Granted
 
18,762

 
43.05

 
  
 
  

 
 
Vested
 
—

 
—

 
 
 
 
 
 
Forfeited
 
(1,285
)
 
43.11

 
 
 
 
 
 
Nonvested at December 31, 2017
 
17,477

 
$
43.04

 
4.6
 
$
736

 
$
620