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Note 4 - Loan Receivables and Allowance for Loan Losses (Details) - Delinquency Status of Non-accrual Loans and Past Due Matured Loans - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Commercial |  |
Non accrual loans | $ 1,593 | $ 866
Pass [Member] |  |
Commercial |  |
Non accrual loans | 0 | 0
Substandard [Member] |  |
Commercial |  |
Non accrual loans | 1,593 | 866
Non-Accrual Loans [Member] |  |
Commercial |  |
Non accrual loans past due | 1,593 | 728
Non accrual loans current | 0 | 138
Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Non-Accrual Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 1,593 | 728
Commercial Portfolio Segment [Member] |  |
Commercial |  |
Non accrual loans | 0 | 2
Commercial Portfolio Segment [Member] | Pass [Member] |  |
Commercial |  |
Non accrual loans | 0 | 0
Commercial Portfolio Segment [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans | 0 | 2
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 2
Non accrual loans current | 0 | 0
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Pass [Member] |  |
Commercial |  |
Non accrual loans past due | 0 |
Non accrual loans current | 0 |
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 2
Non accrual loans current | 0 | 0
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Pass [Member] |  |
Commercial |  |
Non accrual loans past due | 0 |
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Pass [Member] |  |
Commercial |  |
Non accrual loans past due | 0 |
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 2
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Pass [Member] |  |
Commercial |  |
Non accrual loans past due | 0 |
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 2
Commercial Real Estate Portfolio Segment [Member] |  |
Commercial |  |
Non accrual loans | 0 | 138
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] |  |
Commercial |  |
Non accrual loans | 0 | 0
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans | 0 | 138
Commercial Real Estate Portfolio Segment [Member] | Non-Accrual Loans [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Non accrual loans current | 0 | 138
Commercial Real Estate Portfolio Segment [Member] | Non-Accrual Loans [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Non accrual loans current | 0 | 138
Commercial Real Estate Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Commercial Real Estate Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Commercial Real Estate Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Commercial Real Estate Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Commercial Real Estate Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Commercial Real Estate Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Residential Portfolio Segment [Member] |  |
Commercial |  |
Non accrual loans | 1,590 | 719
Residential Portfolio Segment [Member] | Pass [Member] |  |
Commercial |  |
Non accrual loans | 0 | 0
Residential Portfolio Segment [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans | 1,590 | 719
Residential Portfolio Segment [Member] | Non-Accrual Loans [Member] |  |
Commercial |  |
Non accrual loans past due | 1,590 | 719
Non accrual loans current | 0 | 0
Residential Portfolio Segment [Member] | Non-Accrual Loans [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 1,590 | 719
Non accrual loans current | 0 | 0
Residential Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Residential Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Residential Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Residential Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Residential Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 1,590 | 719
Residential Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 1,590 | 719
Consumer Portfolio Segment [Member] |  |
Commercial |  |
Non accrual loans | 3 | 7
Consumer Portfolio Segment [Member] | Pass [Member] |  |
Commercial |  |
Non accrual loans | 0 | 0
Consumer Portfolio Segment [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans | 3 | 7
Consumer Portfolio Segment [Member] | Non-Accrual Loans [Member] |  |
Commercial |  |
Non accrual loans past due | 3 | 7
Non accrual loans current | 0 | 0
Consumer Portfolio Segment [Member] | Non-Accrual Loans [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 3 | 7
Non accrual loans current | 0 | 0
Consumer Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Consumer Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Consumer Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Consumer Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | 0 | 0
Consumer Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Commercial |  |
Non accrual loans past due | 3 | 7
Consumer Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Substandard [Member] |  |
Commercial |  |
Non accrual loans past due | $ 3 | $ 7

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