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Allowance for Loan Losses (Summary of Loans Classified as TDRs) (Details) - Loans First Deemed To Be TDRs [Member]
$ in Thousands
9 Months Ended
Sep. 30, 2020
USD ($)
loan
Financing Receivable, Troubled Debt Restructuring [Line Items]  
Number of loans | loan 4
Pre-Modification Outstanding Recorded Investment $ 166
Post-Modification Outstanding Recorded Investment $ 166
Real Estate Loans: One-to-Four Family [Member]  
Financing Receivable, Troubled Debt Restructuring [Line Items]  
Number of loans | loan 3
Pre-Modification Outstanding Recorded Investment $ 150
Post-Modification Outstanding Recorded Investment $ 150
Real Estate Loans: Home Equity [Member]  
Financing Receivable, Troubled Debt Restructuring [Line Items]  
Number of loans | loan 1
Pre-Modification Outstanding Recorded Investment $ 16
Post-Modification Outstanding Recorded Investment $ 16