Commitments and Contingencies (Schedule of Lease Commitments) (Details)	Jun. 30, 2020 USD ($)
Maximum Commitment For All Active Development Projects	$ 46,645,000
Development in Process	(41,706,000)
Remaining Unfunded Development Commitment	4,939,000
Development Commitment [Member] | Ignite Medical Resorts [Member]
Maximum Commitment For All Active Development Projects	25,350,000
Development in Process	(23,114,000)
Remaining Unfunded Development Commitment	2,236,000
Development Commitment [Member] | Navion Senior Solutions [Member]
Maximum Commitment For All Active Development Projects	650,000
Development in Process	0
Remaining Unfunded Development Commitment	650,000
Capital Improvement Commitment [Member] | Woodland Village [Member]
Maximum Commitment For All Active Development Projects	7,515,000
Development in Process	(7,425,000)
Remaining Unfunded Development Commitment	90,000
Capital Improvement Commitment [Member] | Senior Living Communities [Member]
Maximum Commitment For All Active Development Projects	9,930,000
Development in Process	(9,763,000)
Remaining Unfunded Development Commitment	167,000
Capital Improvement Commitment [Member] | Wingate Healthcare [Member]
Maximum Commitment For All Active Development Projects	1,900,000
Development in Process	(818,000)
Remaining Unfunded Development Commitment	1,082,000
Capital Improvement Commitment [Member] | Discovery Senior Living [Member]
Maximum Commitment For All Active Development Projects	900,000
Development in Process	(586,000)
Remaining Unfunded Development Commitment	314,000
Capital Improvement Commitment [Member] | 41 Management [Member]
Maximum Commitment For All Active Development Projects	400,000
Development in Process	0
Remaining Unfunded Development Commitment	$ 400,000