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Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Non-accrual Loans and Past Due Matured Loans - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Commercial & Industrial |  |
Non accrual loans | $ 5,409 | $ 1,593
Pass [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 2 | 0
Substandard [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 5,409 | 1,593
Non-Accrual Loans [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 5,409 | 1,593
Non accrual loans current | 0 | 0
Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 0 | 0
Non-Accrual Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 0 | 0
Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 5,409 | 1,593
Commercial Portfolio Segment [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 2,977 | 0
Commercial Portfolio Segment [Member] | Pass [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 0 | 0
Commercial Portfolio Segment [Member] | Substandard [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 2,977 | 0
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 2,977 | 0
Non accrual loans current | 0 | 0
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Pass [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 0 | 0
Non accrual loans current | 0 | 0
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Substandard [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 2,977 | 0
Non accrual loans current | 0 | 0
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Commercial & Industrial |  |
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 & Industrial |  |
Non accrual loans past due | 0 | 0
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Substandard [Member] |  |
Commercial & Industrial |  |
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 & Industrial |  |
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 & Industrial |  |
Non accrual loans past due | 0 | 0
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Substandard [Member] |  |
Commercial & Industrial |  |
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 & Industrial |  |
Non accrual loans past due | 2,977 | 0
Commercial Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Pass [Member] |  |
Commercial & Industrial |  |
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] | Substandard [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 2,977 | 0
Commercial Real Estate Portfolio Segment [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 840 | 0
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 0 | 0
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 840 | 0
Commercial Real Estate Portfolio Segment [Member] | Non-Accrual Loans [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 840 | 0
Non accrual loans current | 0 | 0
Commercial Real Estate Portfolio Segment [Member] | Non-Accrual Loans [Member] | Substandard [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 840 | 0
Non accrual loans current | 0 | 0
Commercial Real Estate Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Commercial & Industrial |  |
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 & Industrial |  |
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 & Industrial |  |
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 & Industrial |  |
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 & Industrial |  |
Non accrual loans past due | 840 | 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 & Industrial |  |
Non accrual loans past due | 840 | 0
Residential Portfolio Segment [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 1,590 | 1,590
Residential Portfolio Segment [Member] | Pass [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 0 | 0
Residential Portfolio Segment [Member] | Substandard [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 1,590 | 1,590
Residential Portfolio Segment [Member] | Non-Accrual Loans [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 1,590 | 1,590
Non accrual loans current | 0 | 0
Residential Portfolio Segment [Member] | Non-Accrual Loans [Member] | Substandard [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 1,590 | 1,590
Non accrual loans current | 0 | 0
Residential Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Commercial & Industrial |  |
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 & Industrial |  |
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 & Industrial |  |
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 & Industrial |  |
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 & Industrial |  |
Non accrual loans past due | 1,590 | 1,590
Residential Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Substandard [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 1,590 | 1,590
Consumer Portfolio Segment [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 2 | 3
Consumer Portfolio Segment [Member] | Pass [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 2 | 0
Consumer Portfolio Segment [Member] | Substandard [Member] |  |
Commercial & Industrial |  |
Non accrual loans | 2 | 3
Consumer Portfolio Segment [Member] | Non-Accrual Loans [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 2 | 3
Non accrual loans current | 0 | 0
Consumer Portfolio Segment [Member] | Non-Accrual Loans [Member] | Substandard [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | 2 | 3
Non accrual loans current | 0 | 0
Consumer Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Commercial & Industrial |  |
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 & Industrial |  |
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 & Industrial |  |
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 & Industrial |  |
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 & Industrial |  |
Non accrual loans past due | 2 | 3
Consumer Portfolio Segment [Member] | Non-Accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Substandard [Member] |  |
Commercial & Industrial |  |
Non accrual loans past due | $ 2 | $ 3

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