| Computation of Basic and Diluted Earnings Per Share |
| | | | | | | | | | | | | | | | Three Months Ended | | Three Months Ended | | | | September 30, 2021 | | September 30, 2020 | | (dollars in thousands, except per share amounts) | | Basic | | Diluted | | Basic | | Diluted | | Net income | | $ | 37,226 | | $ | 37,226 | | $ | 30,938 | | $ | 30,938 | | Basic common shares outstanding | | | 44,819,743 | | | 44,819,743 | | | 44,625,668 | | | 44,625,668 | | Effect of options, restricted stock and contingent shares issuable | | | | | | 183,194 | | | | | | 260,108 | | Diluted common shares outstanding | | | | | | 45,002,937 | | | | | | 44,885,776 | | Earnings per share | | $ | 0.83 | | $ | 0.83 | | $ | 0.69 | | $ | 0.69 | |
| | | | | | | | | | | | | | | Nine Months Ended | | Nine Months Ended | | | September 30, 2021 | | September 30, 2020 | (dollars in thousands, except share and per share amounts) | | Basic | | Diluted | | Basic | | Diluted | Net income | | $ | 85,635 | | $ | 85,635 | | $ | 62,003 | | $ | 62,003 | Basic common shares outstanding | | | 44,773,683 | | | 44,773,683 | | | 44,638,634 | | | 44,638,634 | Effect of options and restricted stock | | | | | | 204,180 | | | | | | 244,978 | Diluted common shares outstanding | | | | | | 44,977,863 | | | | | | 44,883,612 | Earnings per share | | $ | 1.91 | | $ | 1.90 | | $ | 1.39 | | $ | 1.38 |
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