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Earnings Per Share | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share Earnings per share in the table below, for the three and nine month periods ended September 30, 2018 and 2017 are calculated under the two-class method as required by ASC Topic 260, Earnings Per Share. ASC 260 provides that unvested share-based payment awards that contain nonforfeitable rights to dividends are participating securities and shall be included in the computation of earnings per share pursuant to the two-class method. The Company has issued restricted stock awards that contain such rights and are therefore considered participating securities. Basic earnings per common share are calculated by dividing net income allocable to common stock by the weighted average number of common shares, excluding participating securities, during the period. Diluted earnings per common share include the dilutive effect of participating securities.
| Three Months Ended
(in thousands, except share and per share data) | 9/30/2018 |  | 9/30/2017
Basic |  |  |
Net income available to common shareholders | $ | 20,902 |  |  | $ | 17,394 |
Less: income attributable to unvested stock-based compensation awards | (318 | ) |  | (266 | )
Net earnings allocated to common shareholders | 20,584 |  |  | 17,128 |
Weighted average shares outstanding, including unvested stock-based compensation awards | 15,278,661 |  |  | 15,197,180 |
Less: unvested stock-based compensation awards | (231,256 | ) |  | (230,949 | )
Weighted average shares outstanding - Basic | 15,047,405 |  |  | 14,966,231 |
Diluted |  |  |
Net earnings allocated to common shareholders | 20,584 |  |  | 17,128 |
Weighted average shares outstanding - Basic | 15,047,405 |  |  | 14,966,231 |
Plus: incremental shares from assumed conversion of stock-based compensation awards | 97,086 |  |  | 112,324 |
Weighted average shares outstanding - Diluted | 15,144,491 |  |  | 15,078,555 |
Basic EPS | 1.37 |  |  | 1.14 |
Diluted EPS | 1.36 |  |  | 1.14 |
Stock-based compensation awards representing 246 and 21,804 of common shares during the three months ended September 30, 2018 and 2017, respectively, were not included in the computations of diluted earnings per common share because the effect on those periods would have been anti-dilutive.
| Nine Months Ended
(in thousands, except share and per share data) | 9/30/2018 |  | 9/30/2017
Basic |  |  |
Net income available to common shareholders | $ | 63,397 |  |  | $ | 50,037 |
Less: income attributable to unvested stock-based compensation awards | (1,024 | ) |  | (792 | )
Net earnings allocated to common shareholders | 62,373 |  |  | 49,245 |
Weighted average shares outstanding, including unvested stock-based compensation awards | 15,277,026 |  |  | 15,178,039 |
Less: unvested stock-based compensation awards | (244,020 | ) |  | (240,478 | )
Weighted average shares outstanding - Basic | 15,033,006 |  |  | 14,937,561 |
Diluted |  |  |
Net earnings allocated to common shareholders | 62,373 |  |  | 49,245 |
Weighted average shares outstanding - Basic | 15,033,006 |  |  | 14,937,561 |
Plus: incremental shares from assumed conversion of stock-based compensation awards | 98,012 |  |  | 125,309 |
Weighted average shares outstanding - Diluted | 15,131,018 |  |  | 15,062,870 |
Basic EPS | 4.15 |  |  | 3.30 |
Diluted EPS | 4.12 |  |  | 3.27 |
Stock-based compensation awards representing approximately 13,387 and 21,126 of common shares during the nine months ended September 30, 2018 and 2017, respectively were not included in the computations of diluted earnings per common share because the effect on those periods would have been anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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