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Earnings Per Share | 12 Months Ended
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Dec. 31, 2018
Earnings Per Share [Abstract] |
Earnings Per Share | E ARNINGS P ER S HARE The components of the calculation of earnings per share were as follows:
| 2018 |  | 2017 |  | 2016
| (Dollars and shares in thousands)
Net income | $ | 223,994 |  |  | $ | 269,659 |  |  | $ | 153,351 |
Weighted average number of shares used in: |  |  |  |  |
Basic earnings per share | 110,603 |  |  | 110,353 |  |  | 119,732 |
Dilutive common stock equivalents: |  |  |  |  |
Restricted stock units | 1,029 |  |  | 1,010 |  |  | 766 |
Diluted earnings per share | 111,632 |  |  | 111,363 |  |  | 120,498 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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