Commitments, Contingencies and Uncertainties (Schedule of Development Commitments) (Details)	Dec. 31, 2021 USD ($)
Net Investment Income [Line Items]
Maximum Commitment For All Active Development Projects	$ 31,345,000
Development in Process	(23,480,000)
Remaining Unfunded Development Commitment	7,865,000
Village Concepts [Member] | Capital Improvement Commitment [Member]
Net Investment Income [Line Items]
Maximum Commitment For All Active Development Projects	7,515,000
Development in Process	(7,425,000)
Remaining Unfunded Development Commitment	90,000
Senior Living Communities [Member] | Capital Improvement Commitment [Member]
Net Investment Income [Line Items]
Maximum Commitment For All Active Development Projects	9,930,000
Development in Process	(9,930,000)
Remaining Unfunded Development Commitment	0
Discovery Senior Living [Member] | Capital Improvement Commitment [Member]
Net Investment Income [Line Items]
Maximum Commitment For All Active Development Projects	900,000
Development in Process	(900,000)
Remaining Unfunded Development Commitment	0
Watermark Retirement | Capital Improvement Commitment [Member]
Net Investment Income [Line Items]
Maximum Commitment For All Active Development Projects	6,500,000
Development in Process	(4,436,000)
Remaining Unfunded Development Commitment	2,064,000
Remaining Tenants Not in Tenant Concentration | Development Commitment [Member]
Net Investment Income [Line Items]
Maximum Commitment For All Active Development Projects	2,850,000
Development in Process	(576,000)
Remaining Unfunded Development Commitment	2,274,000
Navion Senior Solutions [Member] | Capital Improvement Commitment [Member]
Net Investment Income [Line Items]
Maximum Commitment For All Active Development Projects	3,650,000
Development in Process	(213,000)
Remaining Unfunded Development Commitment	$ 3,437,000