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Commitments and Contingencies (Narrative) (Details) |  | 3 Months Ended | 12 Months Ended | 24 Months Ended
--- | --- | --- | --- | ---
Nov. 30, 2021 USD ($) Apartment Building Shop | Jun. 30, 2020 USD ($) Apartment | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2021 USD ($)
Riverview [Member] |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |
Number of buildings under the project | Building | 3 |  |  |  |
Number of apartments under the project | Apartment | 17 |  |  |  |
Number of shops under the project | Shop | 2 |  |  |  |
Limited partner capital contribution | $ 4,356,000 |  |  |  |
Total LIHTCs amount awarded for the project | 484,000 |  |  |  |
Total anticipated LIHTCs amount under the housing project | 4,840,000 |  |  |  |
Principal amount of construction loan | $ 3,500,000 |  |  |  |
Interest percentage | 5.50% |  |  |  |
Term of construction loan | 24 months |  |  |  |
Project investment amortization period | 10 years |  |  |  |
Cumberland County, Pennsylvania |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |
Number of apartments under the project | Apartment |  | 39 |  |  |
Limited partner capital contribution |  | $ 10,805,000 |  |  |
Total LIHTCs amount awarded for the project |  | 1,205,000 |  |  |
Total anticipated LIHTCs amount under the housing project |  | $ 12,046,000 |  |  |
Project investment amortization period |  | 10 years |  |  |
PPP Loans [Member] | Small Business Administration [Member] |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |
Nonrefundable loan processing fees received |  |  | $ 17,997,000 | $ 20,883,000 | $ 38,880,000

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