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Note 15 - Net Income per Common Share | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] | Note 15 – Net Income per Common Share The calculation of net income per common share for the years ended December 31 was as follows:
|  | 2015 |  |  | 2014 |  |  | 2013 |
(dollars and shares in thousands, except per share data) |  |  |  |  |  |  |  |  |  |  |  |
Basic: |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders |  | $ | 83,566 |  |  | $ | 53,644 |  |  | $ | 46,441 |
Average common shares outstanding |  |  | 32,836 |  |  |  | 26,684 |  |  |  | 25,726 |
Basic net income per common share |  | $ | 2.54 |  |  | $ | 2.01 |  |  | $ | 1.81 |
Diluted: |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders |  | $ | 83,566 |  |  | $ | 53,644 |  |  | $ | 46,441 |
Average common shares outstanding |  |  | 32,836 |  |  |  | 26,684 |  |  |  | 25,726 |
Adjustment for common share equivalents |  |  | 643 |  |  |  | 867 |  |  |  | 633 |
Average common shares outstanding-diluted |  |  | 33,479 |  |  |  | 27,551 |  |  |  | 26,359 |
Diluted net income per common share |  | $ | 2.50 |  |  | $ | 1.95 |  |  | $ | 1.76 |
Anti-dilutive shares |  |  | 5 |  |  |  | 13 |  |  |  | 35 |

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