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Note 5 - Loans - Troubled Debt Restructuring Activity (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Charge-offs | $ (1,780) | $ (752) | $ (5,600)
Accruing Troubled Debt Restructuring [Member] |  |  |
Beginning balance | 81,680 | 104,356 | 117,597
New restructurings | 26,965 | 17,752 | 23,740
Restructured loans restored to accrual status | 10,303 | 723 | 962
Charge-offs | (88) | (104) |
Payments | (24,192) | (30,858) | (13,256)
Restructured loans placed on non-accrual | (13,984) | (10,189) | (24,687)
Expiration of loan concession | (15,291) |  |
Ending balance | 65,393 | 81,680 | 104,356
Restructured loans placed on non-accrual | 13,984 | 10,189 | 24,687
Restructured loans restored to accrual status | (10,303) | (723) | (962)
Non-accruing Troubled Debt Restructuring [Member] |  |  |
Beginning balance | 39,923 | 41,618 | 38,769
New restructurings | 6,940 | 2,006 | 1,331
Restructured loans restored to accrual status | 10,303 | 723 | 962
Charge-offs | (5,271) | (3,246) | (8,938)
Payments | (15,551) | (9,921) | (11,710)
Restructured loans placed on non-accrual | (13,984) | (10,189) | (24,688)
Ending balance | 29,722 | 39,923 | 41,618
Restructured loans placed on non-accrual | 13,984 | 10,189 | 24,688
Foreclosures |  |  | (1,560)
Restructured loans restored to accrual status | $ (10,303) | $ (723) | $ (962)

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- Definition Represents information about troubled debt restructurings, expiration of loan concession upon renewal. + 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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