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Share-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity
Restricted stock activity for the year ended December 31, 2017 and the six months ended June 30, 2018 was as follows:
 
 
Number of
Restricted Shares/Units
 
Weighted Average
Grant-Date
Fair Value
Nonvested balance as of December 31, 2016
 
116,245

 
$
21.13

Granted
 
71,130

 
21.67

Vested
 
(48,550
)
 
21.51

Forfeited
 
(8,384
)
 
21.65

Nonvested balance as of December 31, 2017
 
130,441

 
21.43

Granted
 
4,870

 
25.69

Vested
 
(1,868
)
 
23.25

Forfeited
 
(7,902
)
 
22.11

Nonvested balance as of June 30, 2018
 
125,541

 
$
21.52
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
Share-based compensation expense related to restricted stock included in the unaudited Consolidated Statements of Income was as follows:
 
For the Three Months Ended June 30,
 
For the Six Months Ended June 30,
 
2018
 
2017
 
2018
 
2017
 
(In Thousands)
Share-based compensation expense
$
220

 
$
268

 
$
506

 
$
544