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Net Income per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Common Share |
Schedule of net income per common share | The calculation of net income per common share for the years ended December 31 was as follows:
(dollars and shares in thousands, except per share data) |  | 2017 |  | 2016 |  | 2015 |
Basic: |  |  |  |  |  |  |
Net income available to common shareholders |  | $ | 100,232 |  | $ | 97,707 |  | $ | 83,566 |
Average common shares outstanding |  | 34,139 |  | 33,587 |  | 32,836 |
Basic net income per common share |  | $ | 2.94 |  | $ | 2.91 |  | $ | 2.54 |
Diluted: |  |  |  |  |  |  |
Net income available to common shareholders |  | $ | 100,232 |  | $ | 97,707 |  | $ | 83,566 |
Average common shares outstanding |  | 34,139 |  | 33,587 |  | 32,836 |
Adjustment for common share equivalents |  | 182 |  | 594 |  | 643 |
Average common shares outstanding-diluted |  | 34,321 |  | 34,181 |  | 33,479 |
Diluted net income per common share |  | $ | 2.92 |  | $ | 2.86 |  | $ | 2.50 |
Anti-dilutive shares |  | — |  | 7 |  | 5 |

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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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