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Note 8 - Loans - Troubled Debt Restructuring (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($)
No. of Contracts | 6 | 14 | 32 | 21
Pre-Modification Outstanding Recorded Investment | $ 5,373 | $ 23,479 | $ 28,051 | $ 52,638
Post-Modification Outstanding Recorded Investment | 5,373 | 23,174 | 28,051 | 52,333
Charge-offs |  | 305 |  | 305
Special Reserve | $ 2,483 | $ 678 | $ 2,636 | $ 683
Commercial Portfolio Segment [Member] |  |  |  |
No. of Contracts | 3 | 8 | 21 | 13
Pre-Modification Outstanding Recorded Investment | $ 4,621 | $ 18,873 | $ 12,212 | $ 19,543
Post-Modification Outstanding Recorded Investment | 4,621 | 18,873 | 12,212 | 19,543
Charge-offs |  |  |  |
Special Reserve | $ 2,467 | $ 636 | $ 2,493 | $ 641
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
No. of Contracts | 1 | 5 | 7 | 5
Pre-Modification Outstanding Recorded Investment | $ 339 | $ 4,123 | $ 14,626 | $ 4,123
Post-Modification Outstanding Recorded Investment | 339 | 3,818 | 14,626 | 3,818
Charge-offs |  | 305 |  | 305
Special Reserve |  | $ 10 | $ 119 | $ 10
Real Estate Construction Portfolio Segment [Member] |  |  |  |
No. of Contracts |  |  |  | 2
Pre-Modification Outstanding Recorded Investment |  |  |  | $ 28,489
Post-Modification Outstanding Recorded Investment |  |  |  | 28,489
Charge-offs |  |  |  |
Special Reserve |  |  |  |
Residential Portfolio Segment [Member] |  |  |  |
No. of Contracts | 2 | 1 | 4 | 1
Pre-Modification Outstanding Recorded Investment | $ 413 | $ 483 | $ 1,213 | $ 483
Post-Modification Outstanding Recorded Investment | 413 | 483 | 1,213 | 483
Charge-offs |  |  |  |
Special Reserve | $ 16 | $ 32 | $ 24 | $ 32

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- Definition The Special Reserve amount of allowance for credit losses related to receivables which had been measured under a general allowance for credit losses methodology that are now identified as troubled debt restructurings. + References No definition available. + Details
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- Definition Number of 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 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables 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 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
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- Definition Pre-modification amount of investment in financing receivables 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 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + 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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