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Note 6 - Securities Sold Under Agreements to Repurchase (Details) | 3 Months Ended
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Mar. 31, 2016
Maximum [Member] |
Note 6 - Securities Sold Under Agreements to Repurchase (Details) [Line Items] |
Repurchase Agreement Counterparty, Weighted Average Maturity of Agreements | 1 year

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- Definition Weighted average maturity (weighted by amount of the agreement) of repurchase agreements with the counterparty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: 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)(i)(B)(iii)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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