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Note 21 - Fair Value Measurements - Fair Value of Financial Assets Measured on a Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
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Impaired loans (1) (2) (collateral dependent) | [1],[2] | $ 11,229 | $ 17,154
Foreclosed assets and other real estate owned (1) | [2] | 19,506 | 17,806
Fair Value, Inputs, Level 3 [Member] |  |  |
Impaired loans (1) (2) (collateral dependent) | [1],[2] | 11,229 | 17,154
Foreclosed assets and other real estate owned (1) | [2] | 19,506 | 17,806
Fair Value, Inputs, Level 1 [Member] |  |  |
Foreclosed assets and other real estate owned (1) | [2] |  |
Fair Value, Inputs, Level 2 [Member] |  |  |
Foreclosed assets and other real estate owned (1) | [2] |  |
[1] | Specific allocations of $2,195,000 and $2,384,000 were related to the impaired collateral dependent loans for which fair value re-measurements took place during the periods ended September 30, 2017 and December 31, 2016, respectively.
[2] | These amounts represent the resulting carrying amounts on the Consolidated Balance Sheets for impaired collateral dependent loans and foreclosed assets held for sale for which fair value re-measurements took place during the period.

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- Definition The fair value portion of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References No definition available. + Details
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- Definition Fair value portion of assets classified as held for sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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