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Troubled Debt Restructurings (Schedule of Troubled Debt Restructurings on Financing Receivables) (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 | contract | 0 | 1 | 1
Pre-Modification Outstanding Recorded Investment | $ 0 | $ 86 | $ 22
Post-Modification Outstanding Recorded Investment | $ 0 | $ 86 | $ 22
Consumer Installment [Member] |  |  |
Troubled Debt Restructuring, Subsequent Periods [Line Items] |  |  |
Number of Contracts | contract |  |  | 1
Pre-Modification Outstanding Recorded Investment |  |  | $ 22
Post-Modification Outstanding Recorded Investment |  |  | $ 22
Residential Single Family [Member] |  |  |
Troubled Debt Restructuring, Subsequent Periods [Line Items] |  |  |
Number of Contracts | contract |  | 1 |
Pre-Modification Outstanding Recorded Investment |  | $ 86 |
Post-Modification Outstanding Recorded Investment |  | $ 86 |

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