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EARNINGS PER SHARE (Tables) | 9 Months Ended
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Sep. 30, 2014
EARNINGS PER SHARE [Abstract] |
Reconciliation of Basic to Diluted Earnings per Share | The following is a reconciliation of basic to diluted earnings per share for the three and nine months ended September 30, 2014 and 2013:
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
(000's omitted, except per share data) | 2014 | 2013 |  | 2014 | 2013
Net income | $22,371 | $21,989 |  | $68,220 | $63,352
Income attributable to unvested stock-based compensation awards | (115) | (121) |  | (337) | (315)
Income available to common shareholders | 22,256 | 21,868 |  | 67,883 | 63,037
Weighted-average common shares outstanding – basic | 40,596 | 40,121 |  | 40,543 | 39,914
Basic earnings per share | $0.55 | $0.55 |  | $1.67 | $1.58
Net income | $22,371 | $21,989 |  | $68,220 | $63,352
Income attributable to unvested stock-based compensation awards | (115) | (121) |  | (337) | (315)
Income available to common shareholders | 22,256 | 21,868 |  | 67,883 | 63,037
Weighted-average common shares outstanding – basic | 40,596 | 40,121 |  | 40,543 | 39,914
Assumed exercise of stock options | 453 | 506 |  | 482 | 474
Weighted-average common shares outstanding – diluted | 41,049 | 40,627 |  | 41,025 | 40,388
Diluted earnings per share | $0.54 | $0.54 |  | $1.65 | $1.56

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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