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Summary of quarterly financial information (Tables) | 12 Months Ended
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Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract] |
Summary of Quarterly Financial Information |
|  | 2015 |
Quarter Ended |  | March 31 |  | June 30 |  | Sept. 30 |  | Dec. 31 |
Interest income |  | $ | 15,628 |  | $ | 15,638 |  | $ | 15,598 |  | $ | 16,177 |
Interest expense |  |  | 1,535 |  |  | 1,448 |  |  | 1,485 |  |  | 1,569 |
Net interest income |  |  | 14,093 |  |  | 14,190 |  |  | 14,113 |  |  | 14,608 |
Provision for loan losses |  |  | 750 |  |  | 750 |  |  | 900 |  |  | 1,300 |
Net interest income after provision for loan losses |  |  | 13,343 |  |  | 13,440 |  |  | 13,213 |  |  | 13,308 |
Noninterest income |  |  | 4,309 |  |  | 3,626 |  |  | 4,015 |  |  | 3,769 |
Noninterest expense |  |  | 11,094 |  |  | 11,511 |  |  | 11,706 |  |  | 12,468 |
Income before income taxes |  |  | 6,558 |  |  | 5,555 |  |  | 5,522 |  |  | 4,609 |
Income tax expense |  |  | 1,514 |  |  | 1,124 |  |  | 1,113 |  |  | 770 |
Net income |  | $ | 5,044 |  | $ | 4,431 |  | $ | 4,409 |  | $ | 3,839 |
Per share data: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 0.67 |  | $ | 0.59 |  | $ | 0.58 |  | $ | 0.52 |
Cash dividends declared |  | $ | 0.31 |  | $ | 0.31 |  | $ | 0.31 |  | $ | 0.31 |
Average common shares outstanding |  |  | 7,548,358 |  |  | 7,546,198 |  |  | 7,536,824 |  |  | 7,435,440 |
|  | 2014 |
Quarter Ended |  | March 31 |  | June 30 |  | Sept. 30 |  | Dec. 31 |
Interest income |  | $ | 16,432 |  | $ | 15,482 |  | $ | 16,192 |  | $ | 15,850 |
Interest expense |  |  | 1,687 |  |  | 1,727 |  |  | 1,642 |  |  | 1,586 |
Net interest income |  |  | 14,745 |  |  | 13,755 |  |  | 14,550 |  |  | 14,264 |
Provision for loan losses |  |  | 857 |  |  | 1,201 |  |  | 666 |  |  | 800 |
Net interest income after provision for loan losses |  |  | 13,888 |  |  | 12,554 |  |  | 13,884 |  |  | 13,464 |
Noninterest income |  |  | 3,560 |  |  | 3,778 |  |  | 4,380 |  |  | 3,533 |
Noninterest expense |  |  | 11,287 |  |  | 12,239 |  |  | 11,084 |  |  | 11,323 |
Income (loss) before income taxes |  |  | 6,161 |  |  | 4,093 |  |  | 7,180 |  |  | 5,674 |
Income tax expense (benefit) |  |  | 1,463 |  |  | 762 |  |  | 1,944 |  |  | 1,290 |
Net income (loss) |  | $ | 4,698 |  | $ | 3,331 |  | $ | 5,236 |  | $ | 4,384 |
Per share data: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | $ | 0.62 |  | $ | 0.44 |  | $ | 0.70 |  | $ | 0.58 |
Cash dividends declared |  | $ | 0.31 |  | $ | 0.31 |  | $ | 0.31 |  | $ | 0.31 |
Average common shares outstanding |  |  | 7,550,253 |  |  | 7,548,358 |  |  | 7,548,358 |  |  | 7,548,358 |

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and 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=51825399&loc=d3e1280-108306 + Details
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