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Note 3 - Loan Receivables and Allowance for Loan Losses - Delinquency Status of Non-accrual Loans and Past Due Matured Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Non-accruing loans | $ 1,822 | $ 1,821
Residential Portfolio Segment [Member] |  |
Non-accruing loans | 1,590 | 1,590
Commercial Portfolio Segment [Member] |  |
Non-accruing loans | 232 | 231
Substandard [Member] |  |
Non-accruing loans | 1,822 | 1,821
Substandard [Member] | Residential Portfolio Segment [Member] |  |
Non-accruing loans | 1,590 | 1,590
Substandard [Member] | Commercial Portfolio Segment [Member] |  |
Non-accruing loans | 232 | 231
Substandard [Member] | Non-Accrual Loans [Member] |  |
Performing (accruing) loans, past due | 1,822 | 1,821
Performing (accruing) loans, current | 0 | 0
Substandard [Member] | Non-Accrual Loans [Member] | Residential Portfolio Segment [Member] |  |
Performing (accruing) loans, past due | 1,590 | 1,590
Performing (accruing) loans, current | 0 | 0
Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member] |  |
Performing (accruing) loans, past due | 232 | 231
Performing (accruing) loans, current | 0 | 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] |  |
Performing (accruing) loans, past due | 0 | 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Residential Portfolio Segment [Member] |  |
Performing (accruing) loans, past due | 0 | 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member] |  |
Performing (accruing) loans, past due | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] |  |
Performing (accruing) loans, past due | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Residential Portfolio Segment [Member] |  |
Performing (accruing) loans, past due | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member] |  |
Performing (accruing) loans, past due | 0 | 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] |  |
Performing (accruing) loans, past due | 1,822 | 1,821
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Residential Portfolio Segment [Member] |  |
Performing (accruing) loans, past due | 1,590 | 1,590
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member] |  |
Performing (accruing) loans, past due | $ 232 | $ 231

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