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Stock-Based Compensation Plan (Tables)
 6 Months Ended
Jun. 30, 2013
Share-based Compensation [Abstract]  
Restricted Stock Activity
 
Six Months Ended
 
June 30,
 
2013
 
2012
 
Shares
 
Weighted
Average
Grant Date
Fair Value
 
Shares
 
Weighted
Average
Grant Date
Fair Value
Nonvested, beginning of period
16,500

 
$
16.53

 
13,700

 
$
16.11

Granted
14,900

 
22.06

 
14,500

 
17.87

Vested
(9,699
)
 
16.47

 
(7,363
)
 
16.10

Forfeited
(651
)
 
16.75

 
(737
)
 
16.25

Nonvested, end of period
21,050

 
$
20.46

 
20,100

 
$
17.37