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Loans, Trouble Debt Restructuring (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 USD ($) Contract | Mar. 31, 2017 USD ($) Contract | Dec. 31, 2017 USD ($)
Loans [Abstract] |  |  |
Reserves of allowance for loan losses | $ 37 |  | $ 41
Financing receivable modifications [Abstract] |  |  |
Number of contract, subsequently defaults | Contract | 0 | 0 |
Interest Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 0 | 0 |
Pre-modification outstanding recorded investment | $ 0 | $ 0 |
Post-modification outstanding recorded investment | $ 0 | $ 0 |
Term Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 1 | 2 |
Pre-modification outstanding recorded investment | $ 7 | $ 703 |
Post-modification outstanding recorded investment | $ 7 | $ 703 |
Real Estate Loans [Member] | Mortgages [Member] | Interest Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 0 |  |
Pre-modification outstanding recorded investment | $ 0 |  |
Post-modification outstanding recorded investment | $ 0 |  |
Real Estate Loans [Member] | Mortgages [Member] | Term Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 1 |  |
Pre-modification outstanding recorded investment | $ 7 |  |
Post-modification outstanding recorded investment | $ 7 |  |
Real Estate Loans [Member] | Commercial [Member] | Interest Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract |  | 0 |
Pre-modification outstanding recorded investment |  | $ 0 |
Post-modification outstanding recorded investment |  | $ 0 |
Real Estate Loans [Member] | Commercial [Member] | Term Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract |  | 2 |
Pre-modification outstanding recorded investment |  | $ 703 |
Post-modification outstanding recorded investment |  | $ 703 |

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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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- Definition Post-modification amount of investment in financing receivables 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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- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953682-111524 + Details
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