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Earnings per Common Share (Tables) | 6 Months Ended
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Jun. 30, 2016
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | Earnings per common share have been computed as follows:
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
(in thousands, except per share amounts) | 2016 |  | 2015 |  | 2016 |  | 2015
Net income | $ | 10,859 |  | $ | 10,521 |  |  | $ | 21,250 |  |  | $ | 20,901 |
Preferred stock dividends |  | - |  |  | (28 | ) |  |  | (22 | ) |  |  | (56 | )
Net income available to common stockholders | $ | 10,859 |  | $ | 10,493 |  |  | $ | 21,228 |  |  | $ | 20,845 |
Basic weighted average common shares outstanding |  | 30,090 |  |  | 29,868 |  |  |  | 30,071 |  |  |  | 29,813 |
Effect of dilutive options |  | 250 |  |  | 363 |  |  |  | 260 |  |  |  | 391 |
Diluted weighted average common shares outstanding |  | 30,340 |  |  | 30,231 |  |  |  | 30,331 |  |  |  | 30,204 |
Earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic | $ | 0.36 |  | $ | 0.35 |  |  | $ | 0.71 |  |  | $ | 0.70 |
Diluted |  | 0.36 |  |  | 0.35 |  |  |  | 0.70 |  |  |  | 0.69 |

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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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