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Note 7 - Securities Sold Under Agreements to Repurchase (Tables) | 9 Months Ended
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Sep. 30, 2014
Disclosure Text Block [Abstract] |
Schedule of Repurchase Agreements [Table Text Block] |
|  | Nine Months |  |  |  | Twelve Months |
|  | Ended |  |  |  | Ended |
|  | September 30, 2014 |  |  |  | December 31, 2013 |
Outstanding balance at end of period |  | $ | 142,869,000 |  |  | $ | 69,305,000 |
Average interest rate at end of period |  |  | 0.10 | % |  |  | 0.12 | %
Average daily balance during the period |  | $ | 93,855,000 |  |  | $ | 65,939,000 |
Average interest rate during the period |  |  | 0.12 | % |  |  | 0.12 | %
Maximum daily balance during the period |  | $ | 148,700,000 |  |  | $ | 78,960,000 |

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- Definition The entire disclosure for repurchase agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph m -Subparagraph 1 -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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