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Commitments and Contingencies (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2020 USD ($) Apartment | Dec. 31, 2019 USD ($)
Other Commitments [Line Items] |  |
Number of apartments under the project | Apartment | 37 |
Limited partner capital contribution commitment | $ 7,579,000 |
Annual LIHTCs mount awarded for the project | 861,000 |
Total anticipated LIHTCs amount under the housing project | $ 8,613,000 |
Project investment amortization period | 10 years | 10 years
Carrying value of investment in limited partnership | $ 146,000 | $ 190,000
PPP Loans [Member] | Small Business Administration [Member] |  |
Other Commitments [Line Items] |  |
Nonrefundable loan processing fees received | 20,883,000 |
Other Assets [Member] |  |
Other Commitments [Line Items] |  |
Carrying value of investment in limited partnership | $ 6,682,000 | $ 7,249,000

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