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Loan Commitments And Other Related Activities (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Contractual Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |  |
Period for commitments and construction loan commitments | 60 days |
Construction [Member] |  |
Contractual Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |  |
Period for commitments and construction loan commitments | 1 year |
Minimum [Member] |  |
Contractual Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |  |
Interest rates for fixed rate loan commitments | 2.00% | 2.00%
Maturities for fixed rate loan commitments | 1 month | 3 months
Maximum [Member] |  |
Contractual Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |  |
Interest rates for fixed rate loan commitments | 6.50% | 8.75%
Maturities for fixed rate loan commitments | 30 years | 30 years

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