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Earnings Per Comon Share (Tables)
 3 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Earnings Per Share
 
 
Year-to-Date Period Ended:
 
 
3/31/2013
 
3/31/2012
Earnings Per Share - Basic:
 
 
 
 
Net Income
 
$
5,181

 
$
5,288

Weighted Average Shares - Basic
 
12,031

 
12,005

Earnings Per Share - Basic
 
$
0.43

 
$
0.44

 
 
 
 
 
Earnings Per Share - Diluted:
 
 
 
 
Net Income
 
$
5,181

 
$
5,288

Weighted Average Shares - Basic
 
12,031

 
12,005

Dilutive Average Shares Attributable to Stock Options
 
18

 
25

Weighted Average Shares - Diluted
 
12,049

 
12,030

Earnings Per Share - Diluted
 
$
0.43

 
$
0.44

Antidilutive Shares Excluded from the Calculation
of Earnings Per Share
 
129

 
132