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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Computation for earnings per share
The following table sets forth the computation for basic and diluted EPS and reconciliation between basic and diluted shares outstanding:
 
 
Year Ended December 31,
 
2015
 
2014
 
2013
Net income
$
37,074,497

 
$
31,580,931

 
$
22,154,828

 
 
 
 
 
 
Weighted average number of outstanding shares - Basic
3,277,920

 
3,196,127

 
3,142,083

Dilutive impact of restricted stock grants with forfeitable rights to dividends
74,957

 
67,453

 
52,180

Dilutive impact of restricted stock units
6,909

 
2,588

 
—

Weighted average number of outstanding shares - Diluted
3,359,786

 
3,266,168

 
3,194,263

 
 
 
 
 
 
Earnings per share
 
 
 
 
 
Basic
$
11.31

 
$
9.88

 
$
7.05

Diluted
$
11.03

 
$
9.67

 
$
6.94