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Earnings Per Share | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Earnings Per Share | EARNINGS PER SHARE The following table sets forth the computation of basic and diluted earnings per share (in thousands, except per share data):
| For the Year Ended December 31,
| 2017 | 2016 | 2015
Net income available to common shareholders | $ | 54,310 |  | $ | 52,128 |  | $ | 54,097 |
Less: earnings allocated to participating securities | $ | (591 | ) | $ | (623 | ) | $ | (613 | )
Net earnings allocated to common shareholders | $ | 53,719 |  | $ | 51,505 |  | $ | 53,484 |
Distributed earnings allocated to common shares outstanding | $ | 27,497 |  | $ | 25,710 |  | $ | 25,212 |
Undistributed earnings allocated to common shares outstanding | 26,222 |  | 25,795 |  | 28,272 |
Net earnings allocated to common shareholders | $ | 53,719 |  | $ | 51,505 |  | $ | 53,484 |
Average shares outstanding, basic | 15,412 |  | 14,900 |  | 15,123 |
Effect of dilutive securities | 24 |  | 13 |  | 48 |
Average shares outstanding, diluted | 15,436 |  | 14,913 |  | 15,171 |
Basic earnings per share | $ | 3.49 |  | $ | 3.46 |  | $ | 3.54 |
Diluted earnings per share | $ | 3.48 |  | $ | 3.45 |  | $ | 3.53 |
Options to purchase approximately 3,000 shares, 2,000 shares, and 13,000 shares of common stock were outstanding during the years ended December 31, 2017, December 31, 2016, and December 31, 2015, but were not included in the computation of diluted earnings per share because the options’ exercise price was greater than the average market price of the common shares and therefore, the effect would have been anti-dilutive.

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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 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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