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Note 3 - Loans Receivable and Allowance for Loan Losses (Details) | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Jun. 30, 2015 | Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2015 USD ($) | Dec. 31, 2014 USD ($)
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |  |  |
Maximum Period of Credit Extension of Construction Loans |  |  |  | 18 months |  |  |
Period for Charged Off of Open-End Credits |  |  | 180 days |  |  |  |
Period for Charged Off of Close-End Credits |  |  |  | 120 days |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | $ 383,000 |  |  | $ 383,000 |  | $ 383,000 | $ 866,000
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans | $ 3,000 | $ 17,000 |  | $ 8,000 | $ 52,000 |  |
Maximum Period for Charged Off of Consumer Installment Loans |  |  |  | 90 days |  |  |
Number of Non-Accruing Loans | 2 |  |  | 2 |  | 2 |
Impaired Financing Receivable, Recorded Investment | $ 11,727,000 |  |  | $ 11,727,000 |  | $ 11,727,000 | 11,724,000
Impaired Financing Receivable, Related Allowance | 3,000 |  |  | 3,000 |  | 3,000 | 7,000
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 11,724,000 |  |  | $ 11,724,000 |  | $ 11,724,000 | 11,717,000
Financing Receivable, Modifications, Number of Contracts |  |  |  |  |  | 0 |
Commercial Real Estate Portfolio Segment [Member] |  |  |  |  |  |  |
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |  |  |
Maximum Percentage of Credit Extension Based on Market Value of Collateral |  |  |  | 75.00% |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  |  |  |  |  |  | 138,000
Impaired Financing Receivable, Recorded Investment | 7,809,000 |  |  | $ 7,809,000 |  | $ 7,809,000 | 7,398,000
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 7,809,000 |  |  | $ 7,809,000 |  | 7,809,000 | $ 7,398,000
Financing Receivable, Modifications, Number of Contracts |  |  |  |  |  |  | 1
Financing Receivable, Modifications, Pre-Modification Recorded Investment |  |  |  |  |  |  | $ 1,300,000
Financing Receivable, Modifications, Post-Modification Recorded Investment |  |  |  |  |  |  | 1,200,000
Multi-family Real Estate [Member] |  |  |  |  |  |  |
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |  |  |
Maximum Percentage of Credit Extension Based on Market Value of Collateral |  |  |  | 80.00% |  |  |
Construction Portfolio Segment [Member] |  |  |  |  |  |  |
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |  |  |
Percentage of Maximum Loan to Value |  |  |  | 75.00% |  |  |
Residential Portfolio Segment [Member] |  |  |  |  |  |  |
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | $ 380,000 |  |  | $ 380,000 |  | $ 380,000 | 719,000
Number of Non-Accruing Loans | 1 |  |  | 1 |  | 1 |
Impaired Financing Receivable, Recorded Investment | $ 3,366,000 |  |  | $ 3,366,000 |  | $ 3,366,000 | 3,764,000
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 3,366,000 |  |  | 3,366,000 |  | 3,366,000 | 3,764,000
Consumer Portfolio Segment [Member] |  |  |  |  |  |  |
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | $ 3,000 |  |  | $ 3,000 |  | $ 3,000 | 7,000
Number of Non-Accruing Loans | 1 |  |  | 1 |  | 1 |
Impaired Financing Receivable, Recorded Investment | $ 552,000 |  |  | $ 552,000 |  | $ 552,000 | 560,000
Impaired Financing Receivable, Related Allowance | 3,000 |  |  | 3,000 |  | 3,000 | 7,000
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 549,000 |  |  | 549,000 |  | 549,000 | 553,000
Non-Accrual Loans [Member] |  |  |  |  |  |  |
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Current | 383,000 |  |  | 383,000 |  | 383,000 | 138,000
Non-Accrual Loans [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |  |  |  |  |
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Current |  |  |  |  |  |  | $ 138,000
Non-Accrual Loans [Member] | Residential Portfolio Segment [Member] |  |  |  |  |  |  |
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Current | 380,000 |  |  | 380,000 |  | 380,000 |
Non-Accrual Loans [Member] | Consumer Portfolio Segment [Member] |  |  |  |  |  |  |
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Current | $ 3,000 |  |  | $ 3,000 |  | $ 3,000 |

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