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Note 3 - Loans and Allowance for Loan Losses (Details) - TDRs Pre-Modification and Post-Modification - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Performing Financial Instruments [Member] |  |
Residential real estate |  |
TDR's Performing to Modified Terms | $ 1,746 | $ 5,875
TDR's Not Performing Modified Terms | 1,746 | 5,875
Residential Portfolio Segment [Member] | Performing Financial Instruments [Member] | Interest Only Payments [Member] |  |
Residential real estate |  |
TDR's Performing to Modified Terms | 495 |
TDR's Not Performing Modified Terms | 495 |
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] | Commercial Real Estate Owner Occupied [Member] | Interest Only Payments [Member] |  |
Residential real estate |  |
TDR's Performing to Modified Terms |  | 457
TDR's Not Performing Modified Terms |  | 457
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] | Commercial Real Estate Owner Occupied [Member] | Extended Maturity [Member] |  |
Residential real estate |  |
TDR's Performing to Modified Terms | 1,025 | 746
TDR's Not Performing Modified Terms | 1,025 | 746
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] | Commercial Real Estate Owner Occupied [Member] | Interest Rate Below Market Reduction [Member] |  |
Residential real estate |  |
TDR's Performing to Modified Terms |  | 204
TDR's Not Performing Modified Terms |  | 204
Commercial Portfolio Segment [Member] |  |
Residential real estate |  |
TDR's Not Performing Modified Terms | 1,157 |
Commercial Portfolio Segment [Member] | Performing Financial Instruments [Member] | Interest Only Payments [Member] |  |
Residential real estate |  |
TDR's Performing to Modified Terms |  | 4,073
TDR's Not Performing Modified Terms |  | 4,073
Commercial Portfolio Segment [Member] | Performing Financial Instruments [Member] | Interest Rate Below Market Reduction [Member] |  |
Residential real estate |  |
TDR's Performing to Modified Terms | 226 | 395
TDR's Not Performing Modified Terms | $ 226 | $ 395

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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=49124121&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953676-111524 + Details
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