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Note 5 - Loans - Non-accrual Troubled Debt Restructurings (Details) - Non-accruing Troubled Debt Restructuring [Member] - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | --- | ---
Accruing TDRs | $ 29,722 | $ 39,923 | $ 41,618 | $ 38,769
Payment Deferral [Member] |  |  |  |
Accruing TDRs | 17,431 | 12,946 |  |
Contractual Interest Rate Reduction [Member] |  |  |  |
Accruing TDRs | 1,795 |  |  |
Rate Reduction and Payment Deferral [Member] |  |  |  |
Accruing TDRs | 10,496 | 26,977 |  |
Commercial Portfolio Segment [Member] |  |  |  |
Accruing TDRs | 14,565 | 1,123 |  |
Commercial Portfolio Segment [Member] | Payment Deferral [Member] |  |  |  |
Accruing TDRs | 14,565 | 1,033 |  |
Commercial Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member] |  |  |  |
Accruing TDRs |  |  |  |
Commercial Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member] |  |  |  |
Accruing TDRs |  | 90 |  |
Real Estate Construction Portfolio Segment [Member] |  |  |  |
Accruing TDRs |  | 15,806 |  |
Real Estate Construction Portfolio Segment [Member] | Payment Deferral [Member] |  |  |  |
Accruing TDRs |  | 9,981 |  |
Real Estate Construction Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member] |  |  |  |
Accruing TDRs |  | 5,825 |  |
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Accruing TDRs | 14,633 | 21,906 |  |
Commercial Real Estate Portfolio Segment [Member] | Payment Deferral [Member] |  |  |  |
Accruing TDRs | 2,510 | 1,544 |  |
Commercial Real Estate Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member] |  |  |  |
Accruing TDRs | 1,795 |  |  |
Commercial Real Estate Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member] |  |  |  |
Accruing TDRs | 10,328 | 20,362 |  |
Residential Portfolio Segment [Member] |  |  |  |
Accruing TDRs | 524 | 1,088 |  |
Residential Portfolio Segment [Member] | Payment Deferral [Member] |  |  |  |
Accruing TDRs | 356 | 388 |  |
Residential Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member] |  |  |  |
Accruing TDRs |  |  |  |
Residential Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member] |  |  |  |
Accruing TDRs | $ 168 | $ 700 |  |

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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Recorded Investment -URI http://asc.fasb.org/extlink&oid=65880944 + Details
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