The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10)
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 954
-SubTopic 440
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6491277&loc=d3e6429-115629

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of lease income from operating, direct financing, and sales-type leases. Includes, but is not limited to, variable lease payments, interest income, profit (loss) recognized at commencement, and lease payments paid and payable to lessor.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919372-209981

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Namespace Prefix:	us-gaap_
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Period Type:	duration

- Details

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Investment Activity (2022 Asset Dispositions) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) facility property	Dec. 31, 2021 USD ($) property	Dec. 31, 2020 USD ($)	Sep. 30, 2022 property	Jun. 30, 2022 USD ($) property	May 31, 2022 property
Real Estate [Line Items]
Properties \| property	160
Rental income	$ 217,700	$ 271,049	$ 307,208
Regulatory escrows	6,208	$ 6,208
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties \| property		22		22
Rental income	$ 7,000	$ 10,900	16,600
Bickford Senior Living
Real Estate [Line Items]
Properties	36					3
Rental income	$ 27,600	$ 34,599	$ 49,451
Regulatory escrows					$ 2,400
Bickford Senior Living \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties \| property					3