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Earnings per Common Share | 12 Months Ended
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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.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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