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