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Note 7 - Loans (Details) - Accruing Troubled Debt Restructurings - Accruing Troubled Debt Restructuring [Member] - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | $ 90,172 |
Payment Deferral [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 38,993 | $ 30,200
Rate Reduction [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 7,021 | 7,044
Rate Reduction and Payment Deferral [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 44,158 | 81,680
Rate Reduction and Forgiveness of Principal [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs |  | 44,436
Commercial Portfolio Segment [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 9,041 |
Commercial Portfolio Segment [Member] | Payment Deferral [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 7,446 | 8,298
Commercial Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 1,595 | 10,024
Commercial Portfolio Segment [Member] | Rate Reduction and Forgiveness of Principal [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs |  | 1,726
Real Estate Construction Portfolio Segment [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 5,679 |
Real Estate Construction Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 5,679 | 5,696
Real Estate Construction Portfolio Segment [Member] | Rate Reduction and Forgiveness of Principal [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs |  | 5,696
Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 65,607 |
Commercial Real Estate Portfolio Segment [Member] | Payment Deferral [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 26,393 | 16,701
Commercial Real Estate Portfolio Segment [Member] | Rate Reduction [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 6,025 | 6,045
Commercial Real Estate Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 33,189 | 56,546
Commercial Real Estate Portfolio Segment [Member] | Rate Reduction and Forgiveness of Principal [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs |  | 33,800
Residential Portfolio Segment [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 9,845 |
Residential Portfolio Segment [Member] | Payment Deferral [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 5,154 | 5,201
Residential Portfolio Segment [Member] | Rate Reduction [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 996 | 999
Residential Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | $ 3,695 | 9,414
Residential Portfolio Segment [Member] | Rate Reduction and Forgiveness of Principal [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs |  | $ 3,214

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + 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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