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Note 5 - Loans Receivable (Details Textual) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($) | Dec. 31, 2018 USD ($)
Financing Receivable, Modifications, Number of Contracts |  |  | 2 |  |
Financing Receivable, Troubled Debt Restructuring | $ 135 |  | $ 135 |  |
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | 163 | $ 163 | 163 | $ 163 |
Impaired Financing Receivable, Recorded Investment, Total | 9,000 |  | 9,000 |  | $ 5,800
Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |  |
Impaired Financing Receivable, Unpaid Principal Balance, Total | 6,600 |  | 6,600 |  | 6,000
Impaired Financing Receivable, Recorded Investment, Total | 4,300 |  | $ 4,300 |  | 2,900
Commercial Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts |  |  | 1 |  |
Impaired Financing Receivable, Unpaid Principal Balance, Total | 3,693 |  | $ 3,693 |  | 2,102
Impaired Financing Receivable, Recorded Investment, Total | 3,583 |  | $ 3,583 |  | 1,863
Residential Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts |  |  | 1 |  |
Impaired Financing Receivable, Unpaid Principal Balance, Total | 3,850 |  | $ 3,850 |  | 3,789
Impaired Financing Receivable, Recorded Investment, Total | 2,375 |  | 2,375 |  | $ 1,550
Commercial Loan [Member] |  |  |  |  |
Troubled Debt Restructuring, Debtor, Subsequent Periods, Contingent Payments, Amount, Total | $ 472 |  | $ 472 |  |

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
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- Definition Amount of financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554 + Details
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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953550-111524 + Details
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- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
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