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Note 7 - Loans (Details) - Troubled Debt Restructuring Activity - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2016 | Mar. 31, 2015
Accruing Troubled Debt Restructuring [Member] |  |
Note 7 - Loans (Details) - Troubled Debt Restructuring Activity [Line Items] |  |
Beginning balance | $ 81,680 | $ 104,356
New restructurings |  | 10,628
Restructured loans restored to accrual status | 10,303 |
Charge-offs |  | (148)
Payments | (1,811) | (4,254)
Restructured loans placed on nonaccrual |  | (10,189)
Ending balance | 90,172 | 100,393
Non Accruing Troubled Debt Restructuring [Member] |  |
Note 7 - Loans (Details) - Troubled Debt Restructuring Activity [Line Items] |  |
Beginning balance | 39,923 | 41,618
New restructurings |  | 209
Restructured loans restored to accrual status | (10,303) |
Charge-offs |  | (2,754)
Payments | (6,411) | (4,721)
Restructured loans placed on nonaccrual |  | 10,189
Ending balance | $ 23,209 | $ 44,541

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- Definition Troubled debt restructurings, new restructurings. + References No definition available. + Details
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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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- Definition Reflects the amount of the write-down related to a troubled debt restructuring. + 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 + Details
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