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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2012
Earnings Per Share [Abstract]  
Reconciliation of Basic and Diluted Net Income Per Share
A reconciliation of the denominator of the basic net income per common share computations to the denominator of the diluted net income per common share computations is as follows:

 
2012
 
2011
 
2010
Basic earnings per share:
 
 
 
 
 
Net loss to common shareholders
$
(12,585,107
)
 
$
(17,382,132
)
 
$
(3,193,377
)
Weighted average number of common shares outstanding
19,769,912

 
18,239,004

 
16,129,640

Basic earnings per share
$
(0.64
)
 
$
(0.95
)
 
$
(0.20
)
 
 
 
 
 
 
Diluted earnings per share:
 
 
 
 
 
Net loss to common shareholders
$
(12,585,107
)
 
$
(17,382,132
)
 
$
(3,193,377
)
Weighted average number of common shares outstanding
19,769,912

 
18,239,004

 
16,129,640

Dilutive potential common shares
—

 
—

 
—

Weighted-average shares as adjusted
19,769,912

 
18,239,004

 
16,129,640

Diluted earnings per share
$
(0.64
)
 
$
(0.95
)
 
$
(0.20
)