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Note 8 - Net Income Per Common Share | 6 Months Ended
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Jun. 30, 2015
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] | Note 8. Net Income per Common Share The calculation of net income per common share for the six months ended June 30, 2015 and 2014 was as follows.
|  | Six Months Ended June 30, |  |  | Three Months Ended June 30, |
(dollars and shares in thousands, except per share data) |  | 2015 |  |  | 2014 |  |  | 2015 |  |  | 2014 |
Basic: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders |  | $ | 39,997 |  |  | $ | 25,160 |  |  | $ | 20,759 |  |  | $ | 12,802 |
Average common shares outstanding |  |  | 32,231 |  |  |  | 25,955 |  |  |  | 33,367 |  |  |  | 25,982 |
Basic net income per common share |  | $ | 1.24 |  |  | $ | 0.97 |  |  | $ | 0.62 |  |  | $ | 0.49 |
Diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders |  | $ | 39,997 |  |  | $ | 25,160 |  |  | $ | 20,759 |  |  | $ | 12,802 |
Average common shares outstanding |  |  | 32,231 |  |  |  | 25,955 |  |  |  | 33,367 |  |  |  | 25,982 |
Adjustment for common share equivalents |  |  | 664 |  |  |  | 645 |  |  |  | 631 |  |  |  | 647 |
Average common shares outstanding-diluted |  |  | 32,895 |  |  |  | 26,600 |  |  |  | 33,998 |  |  |  | 26,629 |
Diluted net income per common share |  | $ | 1.22 |  |  | $ | 0.95 |  |  | $ | 0.61 |  |  | $ | 0.48 |
Anti-dilutive shares |  |  | 13 |  |  |  | 21 |  |  |  | 13 |  |  |  | 21 |

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