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Note 3 - Loans Receivables and Allowance for Loan Losses (Details Textual) | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Mar. 31, 2017 USD ($) | Mar. 31, 2017 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2016 USD ($)
Maximum Period of Credit Extension of Construction Loans |  | 1 year 180 days |  |
Period for Charged Off of Open-End Credits |  | 180 days |  |
Period for Charged Off of Close-End Credits |  | 120 days |  |
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans |  | $ 21,000 | $ 17,000 |
Threshold Period Past Due for Write-off of Financing Receivable |  | 90 days |  |
Maximum Period for Charged Off of Consumer Installment Loans |  | 180 days |  |
Performance Period Under Loan Terms |  | 180 days |  |
Financing Receivable, Modifications, Number of Contracts |  | 0 | 0 |
Impaired Financing Receivable, Recorded Investment | $ 8,885,000 | $ 8,885,000 |  | $ 8,951,000
Impaired Financing Receivable, Related Allowance | 232,000 | 232,000 |  | 231,000
Loans and Leases Receivable, Impaired, Commitment to Lend | 0 | 0 |  | 0
Non-Accrual Loans [Member] |  |  |  |
Impaired Financing Receivable, Interest Income, Cash Basis Method |  | $ 0 | $ 0 |
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Maximum Percentage of Credit Extension Based on Market Value of Collateral |  | 75.00% |  |
Impaired Financing Receivable, Recorded Investment | 6,204,000 | $ 6,204,000 |  | 6,267,000
Impaired Financing Receivable, Related Allowance |  |  |  |
Multi-family Real Estate [Member] |  |  |  |
Maximum Percentage of Credit Extension Based on Market Value of Collateral |  | 80.00% |  |
Construction Portfolio Segment [Member] |  |  |  |
Percentage of Maximum Loan to Value |  | 75.00% |  |
Impaired Financing Receivable, Recorded Investment |  |  |  |
Impaired Financing Receivable, Related Allowance |  |  |  |
Commercial Portfolio Segment [Member] |  |  |  |
Proceeds from Insurance Settlement, Investing Activities | 2,800,000 |  |  |
Impaired Financing Receivable, Recorded Investment | 232,000 | 232,000 |  | 231,000
Impaired Financing Receivable, Related Allowance | $ 232,000 | $ 232,000 |  | $ 231,000

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
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