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Note 17 - Consolidated Quarterly Financial Information (unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2012
Schedule of Quarterly Financial Information [Table Text Block] |
|  | Quarters Ended |
2012 |  | Mar. 31 |  |  | Jun. 30 |  |  | Sept. 30 |  |  | Dec. 31 |
Total interest income |  | $ | 10,665 |  |  | $ | 9,657 |  |  | $ | 9,405 |  |  | $ | 9,274 |
Total interest expense |  |  | 1,753 |  |  |  | 1,604 |  |  |  | 1,538 |  |  |  | 1,451 |
Net interest income |  |  | 8,912 |  |  |  | 8,053 |  |  |  | 7,867 |  |  |  | 7,823 |
Provision for loan losses(1) |  |  | 1,316 |  |  |  | 524 |  |  |  | 1,183 |  |  |  | (1,440 | )
Noninterest income |  |  | 3,479 |  |  |  | 1,974 |  |  |  | 1,674 |  |  |  | 1,356 |
Noninterest expense |  |  | 7,332 |  |  |  | 7,162 |  |  |  | 6,957 |  |  |  | 8,290 |
Net income |  |  | 2,622 |  |  |  | 1,719 |  |  |  | 1,107 |  |  |  | 1,604 |
Earnings per share |  | $ | 0.65 |  |  | $ | 0.43 |  |  | $ | 0.27 |  |  | $ | .40 |
2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total interest income |  | $ | 12,025 |  |  | $ | 10,817 |  |  | $ | 10,693 |  |  | $ | 10,505 |
Total interest expense |  |  | 2,822 |  |  |  | 2,663 |  |  |  | 2,509 |  |  |  | 2,175 |
Net interest income |  |  | 9,203 |  |  |  | 8,154 |  |  |  | 8,184 |  |  |  | 8,330 |
Provision for loan losses(2) |  |  | 2,944 |  |  |  | 759 |  |  |  | 1,152 |  |  |  | 41 |
Noninterest income |  |  | 3,659 |  |  |  | 1,687 |  |  |  | 1,058 |  |  |  | 818 |
Noninterest expense |  |  | 7,098 |  |  |  | 6,981 |  |  |  | 7,001 |  |  |  | 7,219 |
Net income |  |  | 2,033 |  |  |  | 1,555 |  |  |  | 886 |  |  |  | 1,361 |
Earnings per share |  | $ | 0.51 |  |  | $ | 0.39 |  |  | $ | 0.22 |  |  | $ | 0.34 |
2010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total interest income |  | $ | 12,228 |  |  | $ | 11,599 |  |  | $ | 11,438 |  |  | $ | 11,249 |
Total interest expense |  |  | 3,619 |  |  |  | 3,421 |  |  |  | 3,328 |  |  |  | 3,179 |
Net interest income |  |  | 8,609 |  |  |  | 8,178 |  |  |  | 8,110 |  |  |  | 8,070 |
Provision for loan losses(3) |  |  | 921 |  |  |  | 721 |  |  |  | 2,225 |  |  |  | 2,004 |
Noninterest income |  |  | 1,865 |  |  |  | 1,524 |  |  |  | 1,382 |  |  |  | 1,383 |
Noninterest expense |  |  | 6,881 |  |  |  | 6,976 |  |  |  | 6,863 |  |  |  | 5,923 |
Net income |  |  | 1,906 |  |  |  | 1,471 |  |  |  | 421 |  |  |  | 1,298 |
Earnings per share |  | $ | 0.48 |  |  | $ | 0.37 |  |  | $ | .10 |  |  | $ | 0.33 |

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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=20225539&loc=d3e1280-108306 + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration