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Fair Value (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |
Fair value assets liabilities transfers amount between level 1 and level 2 | $ 0 | $ 0 | $ 0 | $ 0 |
Impaired loans, unpaid principal balance with allowance recorded | 2,164 |  | 2,164 |  | $ 920
Impaired loans, allowance | 326 |  | 326 |  | 61
Troubled debt restructurings | 4,300 |  | $ 4,300 |  | 4,600
Maximum maturity period of short term borrowings |  |  | 90 days |  |
Measured Using Present Value of Cash Flows |  |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |
Troubled debt restructurings | 542 |  | $ 542 |  | 583
Collateral Dependent Impaired Loans |  |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |
Impaired loans, unpaid principal balance with allowance recorded | 1,500 |  | 1,500 |  | 208
Impaired loans, allowance | 256 |  | 256 |  | $ 13
Provision for loan losses | $ 300 | $ 58 | $ 337 | $ 58 |

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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=121611835&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=121585226&loc=d3e18845-111554 + Details
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