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Loans Loans Modified in Trouble Debt Restructurings (Details) - Entity Loan Modification Program - Payment Deferral $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 USD ($) contract | Mar. 31, 2017 USD ($) contract
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | contract | 1 | 2
Pre-Modification Outstanding Recorded Investment | $ 3 | $ 15
Post-Modification Outstanding Recorded Investment | $ 3 | $ 15
Financing Receivable, Modification, Subsequent Default, Number of Contracts | contract | 0 | 0
Financing Receivable, Modification, Subsequent Default, Recorded Investment | $ 0 | $ 0
Commercial |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | contract | 0 | 0
Pre-Modification Outstanding Recorded Investment | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | $ 0 | $ 0
Financing Receivable, Modification, Subsequent Default, Number of Contracts | contract | 0 | 0
Financing Receivable, Modification, Subsequent Default, Recorded Investment | $ 0 | $ 0
Commercial Real Estate Portfolio Segment |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | contract | 0 | 0
Pre-Modification Outstanding Recorded Investment | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | $ 0 | $ 0
Financing Receivable, Modification, Subsequent Default, Number of Contracts | contract | 0 | 0
Financing Receivable, Modification, Subsequent Default, Recorded Investment | $ 0 | $ 0
Consumer Loans Financing |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | contract | 1 | 2
Pre-Modification Outstanding Recorded Investment | $ 3 | $ 15
Post-Modification Outstanding Recorded Investment | $ 3 | $ 15
Financing Receivable, Modification, Subsequent Default, Number of Contracts | contract | 0 | 0
Financing Receivable, Modification, Subsequent Default, Recorded Investment | $ 0 | $ 0
Residential |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | contract | 0 | 0
Pre-Modification Outstanding Recorded Investment | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | $ 0 | $ 0
Financing Receivable, Modification, Subsequent Default, Number of Contracts | contract | 0 | 0
Financing Receivable, Modification, Subsequent Default, Recorded Investment | $ 0 | $ 0

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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 Pre-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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