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Note 18 - Fair Values Measurements (Tables) | 12 Months Ended
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Dec. 31, 2015
Disclosure Text Block [Abstract] |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] |
|  | Total |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Available for sale securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency debt obligations |  | $ | 147,040,000 |  |  | $ | 0 |  |  | $ | 147,040,000 |  |  | $ | 0 |
Mortgage-backed securities |  |  | 67,074,000 |  |  |  | 0 |  |  |  | 67,074,000 |  |  |  | 0 |
Municipal general obligation bonds |  |  | 122,023,000 |  |  |  | 0 |  |  |  | 113,604,000 |  |  |  | 8,419,000 |
Municipal revenue bonds |  |  | 8,914,000 |  |  |  | 0 |  |  |  | 8,914,000 |  |  |  | 0 |
Other investments |  |  | 1,941,000 |  |  |  | 0 |  |  |  | 1,941,000 |  |  |  | 0 |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swap agreement |  |  | (253,000 | ) |  |  | 0 |  |  |  | (253,000 | ) |  |  | 0 |
Total |  | $ | 346,739,000 |  |  | $ | 0 |  |  | $ | 338,320,000 |  |  | $ | 8,419,000 |
|  | Total |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Available for sale securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency debt obligations |  | $ | 193,468,000 |  |  | $ | 0 |  |  | $ | 193,468,000 |  |  | $ | 0 |
Mortgage-backed securities |  |  | 93,561,000 |  |  |  | 0 |  |  |  | 93,561,000 |  |  |  | 0 |
Municipal general obligation bonds |  |  | 133,082,000 |  |  |  | 0 |  |  |  | 122,801,000 |  |  |  | 10,281,000 |
Municipal revenue bonds |  |  | 10,873,000 |  |  |  | 0 |  |  |  | 10,873,000 |  |  |  | 0 |
Mutual funds |  |  | 1,928,000 |  |  |  | 0 |  |  |  | 1,928,000 |  |  |  | 0 |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swap agreement |  |  | (253,000 | ) |  |  | 0 |  |  |  | (253,000 | ) |  |  | 0 |
Total |  | $ | 432,659,000 |  |  | $ | 0 |  |  | $ | 422,378,000 |  |  | $ | 10,281,000 |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block] |
|  |  |  |  |  | Quoted Prices |  |  |  |  |  |  |  |
|  |  |  |  |  | in Active |  |  | Significant |  |  |  |  |
|  |  |  |  |  | Markets for |  |  | Other |  |  | Significant |
|  |  |  |  |  | Identical |  |  | Observable |  |  | Unobservable |
|  |  |  |  |  | Assets |  |  | Inputs |  |  | Inputs |
|  | Total |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
Impaired loans (1) |  | $ | 8,970,000 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 8,970,000 |
Foreclosed assets (1) |  |  | 1,293,000 |  |  |  | 0 |  |  |  | 0 |  |  |  | 1,293,000 |
Total |  | $ | 10,263,000 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 10,263,000 |
|  |  |  |  |  | Quoted Prices |  |  |  |  |  |  |  |  |
|  |  |  |  |  | in Active |  |  | Significant |  |  |  |  |
|  |  |  |  |  | Markets for |  |  | Other |  |  | Significant |
|  |  |  |  |  | Identical |  |  | Observable |  |  | Unobservable |
|  |  |  |  |  | Assets |  |  | Inputs |  |  | Inputs |
|  | Total |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
Impaired loans (1) |  | $ | 17,097,000 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 17,097,000 |
Foreclosed assets (1) |  |  | 1,995,000 |  |  |  | 0 |  |  |  | 0 |  |  |  | 1,995,000 |
Total |  | $ | 19,092,000 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 19,092,000 |

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- Definition Tabular disclosure of the inputs and valuation techniques used to measure fair value, and a discussion of changes in valuation techniques and related inputs, if any, used to measure similar assets in prior periods (non-recurring basis) by class of asset or liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258 + Details
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