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Real Estate Investments - Mortgage Loans Activity (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) item	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Mortgage Loans
Additions to mortgage loans	$ 9,900,000
Originations and funding under mortgage loans receivable	88,955,000	$ 4,253,000	$ 12,342,000
Application of interest reserve	298,000
Scheduled principal payments received	(1,175,000)	(1,065,000)	(1,065,000)
Mortgage loan premium amortization	(6,000)	(4,000)	(4,000)
Provision for loan loss reserve	(881,000)	(32,000)	(113,000)
Net (decrease) increase in mortgage loans receivable	87,191,000	3,152,000	11,160,000
Interest receivable	39,522,000	32,746,000
Write-off of accrued interest receivable	0	0	0
Carrying Amount of Mortgages	$ 344,442,000	$ 257,251,000	254,099,000	$ 242,939,000
Minimum
Mortgage Loans
Interest rate (as a percent)	4.00%
Maximum
Mortgage Loans
Interest rate (as a percent)	8.00%
Mortgage Loans
Mortgage Loans
Additions to mortgage loans	$ 540,000
Gross Investment	$ 347,915,000
Loan Term	30 years
Interest rate (as a percent)	2.25%
Mortgages with 9.41% Interest, fixed for two years, and escalating by 2.25% thereafter | Mortgage Loans
Mortgage Loans
Additions to mortgage loans			$ 7,500,000
Specified basis points for annual increase in interest rate (as a percent)			2.25%
Loan Term			2 years
Interest rate (as a percent)		9.41%
Mortgages With 8.89 Percent Interest With Escalation [Member] | Mortgage Loans
Mortgage Loans
Additions to mortgage loans		$ 2,000,000
Specified basis points for annual increase in interest rate (as a percent)	2.25%
Interest rate (as a percent)		8.89%
SNF | Mortgage loans with 7.5% Interest Maturing 2022 | Mortgage Loans
Mortgage Loans
Number of beds/units | item	91
Missouri | SNF | Mortgage loans with 7.5% Interest Maturing 2022 | Mortgage Loans
Mortgage Loans
Gross Investment	$ 1,638,000
Number of beds/units | item	91
Amount With held in Reserve	$ 142,000
Loan Term	1 year
Interest rate (as a percent)	7.50%
Louisiana | SNF | Mortgage loans with 7.5% Interest Maturing 2022 | Mortgage Loans
Mortgage Loans
Gross Investment	$ 27,047,000
Number of beds/units | item	189
Loan Term	3 years
Interest rate (as a percent)	7.50%
Extension term number of options | item	1
Extension term	12 months
Florida | ALF | Mortgages With 7.75% Interest | Mortgage Loans
Mortgage Loans
Gross Investment	$ 11,724,000
Number of beds/units | item	68
Amount With held in Reserve	$ 806,000
Loan Term	4 years
Interest rate (as a percent)	7.75%
Origination/Funding	$ 4,177,000
Application of mortgage premium	156,000
California | Mortgage Loans
Mortgage Loans
Amount With held in Reserve	$ 4,496,000
Loan Term	4 years
Number of real estate properties acquired | item	13
Carrying Amount of Mortgages	$ 48,006,000
Funded commitment	6,097,000
Commitment for working capital	$ 650,000
California | ALF | Mortgages With 7.75% Interest | Mortgage Loans
Mortgage Loans
Interest rate (as a percent)	7.25%
SNF Beds | Mortgage Loans
Mortgage Loans
Number of beds/units | item	2,916

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Mortgage loan related to the bank premiums.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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