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17. Quarterly Data (Tables) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Schedule of quarterly financial information |
|  | 2018 |  | 2017
(Dollars in thousands, except per share amounts) |  | First |  | Second |  | Third |  | Fourth |  | First |  | Second |  | Third |  | Fourth
Total interest income |  | $ | 10,759 |  |  |  | 11,059 |  |  |  | 11,608 |  |  |  | 11,924 |  |  | $ | 10,064 |  |  |  | 10,461 |  |  |  | 10,698 |  |  |  | 10,726 |
Total interest expense |  |  | 467 |  |  |  | 513 |  |  |  | 557 |  |  |  | 609 |  |  |  | 598 |  |  |  | 622 |  |  |  | 650 |  |  |  | 507 |
Net interest income |  |  | 10,292 |  |  |  | 10,546 |  |  |  | 11,051 |  |  |  | 11,315 |  |  |  | 9,466 |  |  |  | 9,839 |  |  |  | 10,048 |  |  |  | 10,219 |
(Reduction of) provision for loan losses |  |  | 31 |  |  |  | 231 |  |  |  | 110 |  |  |  | 418 |  |  |  | (236 | ) |  |  | 49 |  |  |  | (218 | ) |  |  | (102 | )
Other income |  |  | 3,736 |  |  |  | 4,016 |  |  |  | 3,915 |  |  |  | 4,499 |  |  |  | 3,442 |  |  |  | 3,929 |  |  |  | 4,159 |  |  |  | 3,834 |
Other expense |  |  | 10,042 |  |  |  | 10,560 |  |  |  | 10,702 |  |  |  | 11,270 |  |  |  | 10,361 |  |  |  | 9,983 |  |  |  | 10,006 |  |  |  | 10,878 |
Income before income taxes |  |  | 3,955 |  |  |  | 3,771 |  |  |  | 4,154 |  |  |  | 4,126 |  |  |  | 2,783 |  |  |  | 3,736 |  |  |  | 4,419 |  |  |  | 3,277 |
Income taxes (benefit) |  |  | 652 |  |  |  | 595 |  |  |  | 687 |  |  |  | 690 |  |  |  | 578 |  |  |  | 925 |  |  |  | 1,177 |  |  |  | 1,267 |
Net earnings |  |  | 3,303 |  |  |  | 3,176 |  |  |  | 3,467 |  |  |  | 3,436 |  |  |  | 2,205 |  |  |  | 2,811 |  |  |  | 3,242 |  |  |  | 2,010 |
Basic net earnings per share |  | $ | 0.55 |  |  |  | 0.53 |  |  |  | 0.58 |  |  |  | 0.57 |  |  | $ | 0.36 |  |  |  | 0.47 |  |  |  | 0.54 |  |  |  | 0.34 |
Diluted net earnings per share |  | $ | 0.55 |  |  |  | 0.53 |  |  |  | 0.57 |  |  |  | 0.57 |  |  | $ | 0.36 |  |  |  | 0.46 |  |  |  | 0.53 |  |  |  | 0.34 |

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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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