Commitments and Contingencies (Schedule of Loan Commitments) (Details) - USD ($)	3 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Loans and Leases Receivable, Commitments, Fixed Rates	$ 285,900,000
Loans and Leases Receivable, Net Amount	(301,318,000)	$ (292,427,000)
Notes Receivable Funding Commitment	62,395,000
Bickford Senior Living [Member]
Loans and Leases Receivable, Net Amount	(35,079,000)
Senior Living Communities [Member]
Loans and Leases Receivable, Net Amount	(44,189,000)
Note A [Member] \| LCS Sagewood [Member]
Loans and Leases Receivable, Commitments, Fixed Rates	118,800,000
Loans and Leases Receivable, Net Amount	(104,618,000)
Notes Receivable Funding Commitment	14,182,000
Note B [Member] \| LCS Sagewood [Member]
Loans and Leases Receivable, Commitments, Fixed Rates	61,200,000
Loans and Leases Receivable, Net Amount	(61,200,000)
Notes Receivable Funding Commitment	0
Development Commitment [Member] \| Bickford Senior Living [Member]
Loans and Leases Receivable, Commitments, Fixed Rates	42,900,000
Loans and Leases Receivable, Net Amount	(31,090,000)
Notes Receivable Funding Commitment	11,810,000
Development Commitment [Member] \| 41 Management [Member]
Loans and Leases Receivable, Commitments, Fixed Rates	22,200,000
Loans and Leases Receivable, Net Amount	(6,207,000)
Notes Receivable Funding Commitment	15,993,000
Revolving Credit Facility [Member] \| Senior Living Communities [Member]
Loans and Leases Receivable, Commitments, Fixed Rates	20,000,000
Loans and Leases Receivable, Net Amount	(11,489,000)
Notes Receivable Funding Commitment	8,511,000
Working Capital \| 41 Management [Member]
Loans and Leases Receivable, Commitments, Fixed Rates	10,800,000
Loans and Leases Receivable, Net Amount	(8,901,000)
Notes Receivable Funding Commitment	1,899,000
Working Capital \| Timber Ridge OpCo
Loans and Leases Receivable, Commitments, Fixed Rates	5,000,000
Loans and Leases Receivable, Net Amount	0
Notes Receivable Funding Commitment	5,000,000
Working Capital \| Watermark Retirement [Member]
Loans and Leases Receivable, Commitments, Fixed Rates	5,000,000
Loans and Leases Receivable, Net Amount	0
Notes Receivable Funding Commitment	5,000,000
Notes Receivable Remain Unfunded [Member]
Loans and Leases Receivable, Net Amount	$ (223,505,000)

This item represents the remaining funding commitment for a currently outstanding note receivable.

No definition available.

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- Definition

Reflects the amount of cash required to fully fund agreements to provide advances to borrowers and lessees at stated interest rates.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 825
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=123345438&loc=d3e61044-112788

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 825
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123345438&loc=d3e61082-112788

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7)
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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