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Note 4 - Loans and Allowance for Loan Losses (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |
Allowance for Loan and Lease Losses, Period Increase (Decrease) | $ 48 | $ 93
Allowance for Loan and Lease Losses, Write-offs | 0 | 1,422
Impaired Financing Receivable, Related Allowance | 2,212 | 2,164
Loans and Leases Receivable, Impaired, Commitment to Lend | $ 823 | $ 995
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | 0 | 0
Minimum Loan Balance for Loans Evaluated by Risk Categories | $ 500 |
Specific Reserves [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |
Allowance for Loan and Lease Losses, Write-offs |  | $ 1,304
Troubled Debt Restructurings [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |
Increase (Decrease) in Other Loans | $ (611) |
Change in Troubled Debt Restructurings | 3.80% |
Percentage of Loan Portfolio | 82.00% | 81.00%
Impaired Financing Receivable, Related Allowance | $ 1,717 | $ 1,669
Unsecured [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |
Percentage of Loan Portfolio | 6.09% | 6.06%
Residential Portfolio Segment [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |
Real Estate Acquired Through Foreclosure | $ 951 | $ 1,131
Mortgage Loans in Process of Foreclosure, Amount | $ 1,114 | 988
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Nonowner Occupied [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |
Financing Receivable, Modifications, Number of Contracts | 2 |
Impaired Financing Receivable, Related Allowance | $ 105 | $ 107

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- Definition Amount of increase (decrease) of allowance reserve for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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