Earnings Per Share
The details of the computation of basic and diluted earnings per common share are as follows: | | | | | | | | | | | | | | | | Twelve months ended December 31, | | 2015 | | 2014 | | 2013 | (dollars in thousands, except for share data) | | | | | | | Net income | | $ | 89,388 |
| | $ | 101,931 |
| | $ | 78,236 |
| | | | | | | | Basic weighted average number of shares outstanding | | 195,933,800 |
| | 195,735,309 |
| | 195,619,943 |
| Dilutive effect of stock options | | 2,113,653 |
| | 2,117,623 |
| | 939,141 |
| Diluted weighted average number of shares outstanding | | 198,047,453 |
| | 197,852,932 |
| | 196,559,084 |
| | | | | | | | Basic net income per common share | | $ | 0.46 |
| | $ | 0.52 |
| | $ | 0.40 |
| Diluted net income per common share | | $ | 0.45 |
| | $ | 0.52 |
| | $ | 0.40 |
| Anti-dilutive shares excluded from diluted earnings per share computation | | 49,795 |
| | — |
| | 96,096 |
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