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Stock-Based Compensation Plan (Tables)
6 Months Ended
Jun. 30, 2018
Share-based Compensation [Abstract]  
Restricted Stock Activity
 
Six Months Ended
 
June 30,
 
2018
 
2017
 
Shares
 
Weighted
Average
Grant Date
Fair Value
 
Shares
 
Weighted
Average
Grant Date
Fair Value
Nonvested, beginning of period
14,401

 
$
24.68

 
14,901

 
$
23.05

Granted
16,950

 
32.84

 
14,650

 
27.46

Vested
(9,109
)
 
24.63

 
(9,493
)
 
23.08

Forfeited
(41
)
 
25.50

 
(657
)
 
23.00

Nonvested, end of period
22,201

 
30.93

 
19,401

 
26.37