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Earnings per Common Share
 12 Months Ended
Dec. 31, 2013
Earnings Per Share [Abstract]  
Earnings Per Share [Text Block]
Note 17.
Earnings per Common Share
 
Basic earnings per share represents income available to common stockholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per share reflects additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustment to income that would result from the assumed issuance.
 
Potential common shares that may be issued by Cornerstone relate to outstanding stock options, determined using the treasury stock method.
 
Earnings per common share have been computed based on the following:
 
 
 
2013
 
2012
 
2011
 
 
 
 
 
 
 
 
 
 
 
 
Net income
 
$
1,680,809
 
$
1,402,063
 
$
1,030,052
 
Less: Preferred stock dividend requirements
 
 
1,500,000
 
 
1,229,780
 
 
651,119
 
Less: Preferred stock accretion
 
 
71,381
 
 
63,924
 
 
36,718
 
 
 
 
 
 
 
 
 
 
 
 
Net income applicable to common stock
 
$
109,428
 
$
108,359
 
$
342,215
 
 
 
 
 
 
 
 
 
 
 
 
Average number of common shares outstanding
 
 
6,547,074
 
 
6,500,396
 
 
6,500,396
 
 
 
 
 
 
 
 
 
 
 
 
Effect of dilutive stock options
 
 
115,213
 
 
50,136
 
 
-
 
 
 
 
 
 
 
 
 
 
 
 
Average number of common shares outstanding used to calculate diluted earnings per common share
 
 
6,662,287
 
 
6,550,532
 
 
6,500,396
 
 
The effects of outstanding antidilutive stock options are excluded from the computation of diluted earnings per common share. There were 358,550, 358,550, and 672,850, antidilutive stock options for 2013, 2012 and 2011, respectively.