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Earnings Per Common Share | 6 Months Ended
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Jun. 30, 2013
Earnings Per Share [Abstract] |
Earnings Per Common Share | Note 10 - Earnings Per Common Share Earnings per common share is computed using the two-class method. Basic earnings per common share is computed by dividing net earnings allocated to common stock by the weighted-average number of common shares outstanding during the applicable period, excluding outstanding participating securities. Participating securities include non-vested stock awards/stock units and deferred stock units, though no actual shares of common stock related to non-vested stock units and deferred stock units have been issued. Non-vested stock awards/stock units and deferred stock units are considered participating securities because holders of these securities receive non-forfeitable dividends at the same rate as holders of the Corporation’s common stock. Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method. The following table presents a reconciliation of net income available to common shareholders, net earnings allocated to common stock and the number of shares used in the calculation of basic and diluted earnings per common share.
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Net income |  | $ | 59,663 |  |  | $ | 58,062 |  |  | $ | 114,851 |  |  | $ | 119,095 |
Less: Preferred stock dividends |  |  | 2,688 |  |  |  | — |  |  |  | 2,688 |  |  |  | — |
Net income available to common shareholders |  |  | 56,975 |  |  |  | 58,062 |  |  |  | 112,163 |  |  |  | 119,095 |
Less: Earnings allocated to participating securities |  |  | 209 |  |  |  | 185 |  |  |  | 407 |  |  |  | 376 |
Net earnings allocated to common stock |  | $ | 56,766 |  |  | $ | 57,877 |  |  | $ | 111,756 |  |  | $ | 118,719 |
Distributed earnings allocated to common stock |  | $ | 30,058 |  |  | $ | 29,424 |  |  | $ | 58,733 |  |  | $ | 57,575 |
Undistributed earnings allocated to common stock |  |  | 26,708 |  |  |  | 28,453 |  |  |  | 53,023 |  |  |  | 61,144 |
Net earnings allocated to common stock |  | $ | 56,766 |  |  | $ | 57,877 |  |  | $ | 111,756 |  |  | $ | 118,719 |
Weighted-average shares outstanding for basic earnings per common share |  |  | 60,010,527 |  |  |  | 61,290,792 |  |  |  | 60,299,939 |  |  |  | 61,245,959 |
Dilutive effect of stock compensation |  |  | 664,597 |  |  |  | 344,044 |  |  |  | 628,961 |  |  |  | 338,732 |
Weighted-average shares outstanding for diluted earnings per common share |  |  | 60,675,124 |  |  |  | 61,634,836 |  |  |  | 60,928,900 |  |  |  | 61,584,691 |

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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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