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Note 5 - Loans - Troubled Debt Restructuring Activity (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Charge-offs |  | $ (305) | $ (830)
Accruing Troubled Debt Restructuring [Member] |  |  |
Beginning balance | 68,565 | 65,393 | 81,680
New restructurings | 26,114 | 73,426 | 26,965
Restructured loans restored to accrual status | 2,896 |  | 10,303
Charge-offs |  |  | (88)
Payments | (30,406) | (54,095) | (24,192)
Restructured loans placed on non-accrual | (2,098) | (13,919) | (13,984)
Expiration of loan concession |  | (2,240) | (15,291)
Ending balance | 65,071 | 68,565 | 65,393
Non-accruing Troubled Debt Restructuring [Member] |  |  |
Beginning balance | 33,416 | 29,722 | 39,923
New restructurings | 3,015 | 4,009 | 6,940
Restructured loans restored to accrual status | (2,896) |  | (10,303)
Charge-offs | (2,347) | (1,650) | (5,271)
Payments | (9,097) | (11,341) | (15,551)
Restructured loans placed on non-accrual | 2,098 | 13,919 | 13,984
Foreclosures |  | (1,243) |
Ending balance | $ 24,189 | $ 33,416 | $ 29,722

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
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- Definition Reflects the amount of the write-down related to a troubled debt restructuring. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
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