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Troubled Debt Restructurings (Schedule of Troubled Debt Restructurings on Financing Receivables) (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
contract
Sep. 30, 2021
USD ($)
contract
Sep. 30, 2020
USD ($)
contract
Troubled Debt Restructuring Subsequent Periods [Line Items]      
Number of Contracts | contract 4 3 4
Pre-Modification Outstanding Recorded Investment $ 944 $ 113 $ 944
Post-Modification Outstanding Recorded Investment $ 948 $ 113 $ 948
Consumer Installment      
Troubled Debt Restructuring Subsequent Periods [Line Items]      
Number of Contracts | contract 1 2 1
Pre-Modification Outstanding Recorded Investment $ 13 $ 15 $ 13
Post-Modification Outstanding Recorded Investment $ 13 $ 15 $ 13
Residential Single Family [Member] | Equity      
Troubled Debt Restructuring Subsequent Periods [Line Items]      
Number of Contracts | contract 3 1 3
Pre-Modification Outstanding Recorded Investment $ 931 $ 98 $ 931
Post-Modification Outstanding Recorded Investment $ 935 $ 98 $ 935