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Note 11 - Other Borrowings and Unused Lines of Credit - Summary of Prepayments of Wholesale Structured Repurchase Agreements (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Amount |  |  |  | $ 69,769,000 | $ 34,559,000
Whole sale Repurchase Agreements [Member] |  |  |  |  |
Amount | $ 55,000,000 | $ 10,000,000 |  | $ 65,000,000 |
Weighted Average Interest Rate | 3.27% | 3.97% |  | 3.38% |
Prepayment Fees | $ 4,010,000 | $ 759,000 |  | $ 4,769,000 |

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- Definition Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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- Definition Amount of cash outflow for the payment of debt classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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