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Fair Value (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
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 | 1,803 |  | 1,803 |  | $ 1,897
Impaired loans, allowance | 271 |  | 271 |  | 276
Provision for loan losses | 750 | 750 | 1,300 | 1,525 |
Troubled debt restructurings | 5,100 |  | $ 5,100 |  | 5,500
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 | 606 |  | $ 606 |  | 694
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 | 1,100 |  | 1,100 |  | 1,100
Impaired loans, allowance | 229 |  | 229 |  | $ 227
Provision for loan losses | $ 46 | $ 60 | $ 46 | $ 126 |

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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: 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=82895541&loc=d3e18845-111554 + Details
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