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Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2014
Accounting Policies [Abstract] |
Schedule of Weighted Average Number of Shares [Table Text Block] |
|  | 2014 |  |  | 2013 |  |  | 2012 |
Average number of common shares outstanding |  |  | 6,948,789 |  |  |  | 6,947,974 |  |  |  | 6,942,411 |
Effect of dilutive options |  |  | 10,345 |  |  |  | 20,419 |  |  |  | 17,456 |
Average number of common shares outstanding used to calculate diluted earnings per common share |  |  | 6,959,134 |  |  |  | 6,968,393 |  |  |  | 6,959,867 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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