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UNAUDITED QUARTERLY FINANCIAL INFORMATION (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Schedule of unaudited quarterly financial information |
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter |  | Full Year
| (Dollars in thousands, except per share data)
2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total interest income | $ | 41,249 |  |  | $ | 41,870 |  |  | $ | 41,765 |  |  | $ | 42,255 |  |  | $ | 167,139 |
Total interest expense | 2,038 |  |  | 2,261 |  |  | 2,339 |  |  | 2,551 |  |  | 9,189 |
Net interest income | 39,211 |  |  | 39,609 |  |  | 39,426 |  |  | 39,704 |  |  | 157,950 |
Provision (credit) for loan and lease losses | (747 | ) |  | (1,382 | ) |  | (743 | ) |  | (2,645 | ) |  | (5,517 | )
Net interest income after provision (credit) for loan and lease losses | 39,958 |  |  | 40,991 |  |  | 40,169 |  |  | 42,349 |  |  | 163,467 |
Investment securities gains (losses) | — |  |  | — |  |  | — |  |  | — |  |  | — |
Income before income taxes | 17,248 |  |  | 18,468 |  |  | 17,858 |  |  | 18,646 |  |  | 72,220 |
Net income | 11,181 |  |  | 12,137 |  |  | 11,466 |  |  | 12,208 |  |  | 46,992 |
Basic earnings per share | $ | 0.36 |  |  | $ | 0.39 |  |  | $ | 0.37 |  |  | $ | 0.40 |  |  | $ | 1.52 |
Diluted earnings per share | 0.35 |  |  | 0.39 |  |  | 0.37 |  |  | 0.39 |  |  | 1.50 |
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter |  | Full Year
| (Dollars in thousands, except per share data)
2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total interest income | $ | 44,213 |  |  | $ | 45,080 |  |  | $ | 45,993 |  |  | $ | 47,276 |  |  | $ | 182,562 |
Total interest expense | 2,958 |  |  | 3,451 |  |  | 3,998 |  |  | 4,452 |  |  | 14,859 |
Net interest income | 41,255 |  |  | 41,629 |  |  | 41,995 |  |  | 42,824 |  |  | 167,703 |
Provision (credit) for loan and lease losses | (80 | ) |  | (2,282 | ) |  | (126 | ) |  | (186 | ) |  | (2,674 | )
Net interest income after provision (credit) for loan and lease losses | 41,335 |  |  | 43,911 |  |  | 42,121 |  |  | 43,010 |  |  | 170,377 |
Income before income taxes | 19,889 |  |  | 19,446 |  |  | 18,179 |  |  | 17,542 |  |  | 75,056 |
Net income | 13,079 |  |  | 12,025 |  |  | 11,812 |  |  | 4,288 |  |  | 41,204 |
Basic earnings per share | $ | 0.43 |  |  | $ | 0.39 |  |  | $ | 0.39 |  |  | $ | 0.14 |  |  | $ | 1.36 |
Diluted earnings per share | 0.42 |  |  | 0.39 |  |  | 0.39 |  |  | 0.14 |  |  | 1.34 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
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