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Note 8 - Loans - Troubled Debt Restructuring Activity (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Charge-offs |  | $ (305) |  | $ (305)
Accruing Troubled Debt Restructuring [Member] |  |  |  |
Beginning balance | 84,487 | 79,819 | 68,565 | 65,393
New restructurings | 2,589 | 21,790 | 25,036 | 49,973
Restructured loans restored to accrual status | 577 |  | 2,895 |
Payments | (13,055) | (35,677) | (19,801) | (41,372)
Restructured loans placed on non-accrual status |  | (3,574) | (2,098) | (9,396)
Expiration of loan concession upon renewal |  |  |  | (2,240)
Ending balance | 74,598 | 62,358 | 74,598 | 62,358
Restructured loans placed on non-accrual status |  | 3,574 | 2,098 | 9,396
Non-accruing Troubled Debt Restructuring [Member] |  |  |  |
Beginning balance | 30,347 | 30,045 | 33,416 | 29,722
New restructurings | 2,784 | 2,360 | 3,015 | 2,360
Restructured loans restored to accrual status | (577) |  | (2,895) |
Payments | (4,836) | (1,933) | (7,754) | (5,160)
Restructured loans placed on non-accrual status |  | (3,574) | (2,098) | (9,396)
Ending balance | 27,718 | 33,691 | 27,718 | 33,691
Restructured loans placed on non-accrual status |  | 3,574 | 2,098 | 9,396
Charge-offs |  | (355) | (161) | (1,901)
Foreclosures |  |  |  | $ (726)

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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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