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Troubled Debt Restructurings (Loans By Class of Financing Receivable Modified as TDRs) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 USD ($) contract | Dec. 31, 2018 USD ($) contract | Dec. 31, 2017 USD ($) contract
Troubled Debt Restructuring, Subsequent Periods [Line Items] |  |  |
Number of Contracts | 18 | 19 |
Troubled Debt Restructurings Within Previous Twelve Months [Member] |  |  |
Troubled Debt Restructuring, Subsequent Periods [Line Items] |  |  |
Number of Contracts | 1 | 0 | 0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $ | $ 72 | $ 0 | $ 0
Residential Single Family [Member] | Troubled Debt Restructurings Within Previous Twelve Months [Member] |  |  |
Troubled Debt Restructuring, Subsequent Periods [Line Items] |  |  |
Number of Contracts | 1 |  |
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $ | $ 72 |  |

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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 within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953682-111524 + Details
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