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Commitments. Contingencies and Uncertainties (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) leaseAgreement property operator	Jun. 30, 2022 USD ($) property	Sep. 30, 2023 USD ($) leaseAgreement property operator	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Commitment and Contingencies [Line Items]
Loans and leases agreement			$ 145,400
Development commitments for construction and renovation	$ 23,200		23,200
Amount funded toward the development commitments	18,800		18,800
Amount funded on real estate investments	1,000		1,000
Contingent lease inducement commitments and contingent consideration of acquisitions	13,900		13,900
Payment of lease incentive			10,000	$ 0
Properties | property		3
Regulatory escrows	6,208		6,208		$ 6,208
Bickford Senior Living Acquisition
Commitment and Contingencies [Line Items]
Asset acquisition, rent deferral deduction			2,500
Lease Payment Deferral | COVID-19
Commitment and Contingencies [Line Items]
Repayments of deferred rent	2,100		5,500
Aggregate lease concessions granted to tenants
Commitment and Contingencies [Line Items]
Operating lease income	26,900
Discovery PropCo
Commitment and Contingencies [Line Items]
Development commitments for construction and renovation	2,000		2,000
Timber Ridge OpCo
Commitment and Contingencies [Line Items]
Payment of lease incentive			10,000
Bickford
Commitment and Contingencies [Line Items]
Mortgage and other notes receivable, net	$ 16,827		$ 16,827
Regulatory escrows		$ 2,400
Bickford | Lease Payment Deferral and Abatement
Commitment and Contingencies [Line Items]
Operating lease income				10,700
Reduction to revenue, rent concessions				$ (5,500)
Loans Receivable
Commitment and Contingencies [Line Items]
Number of operators/tenants | operator	6		6
Notes Receivable Remain Unfunded
Commitment and Contingencies [Line Items]
Mortgage and other notes receivable, net	$ 102,000		$ 102,000
Development Commitment
Commitment and Contingencies [Line Items]
Number of operators/tenants | property	7		7
Lease Inducement
Commitment and Contingencies [Line Items]
Number of leases | leaseAgreement	5		5
Collection of Rent Deferred | Lease Payment Deferral
Commitment and Contingencies [Line Items]
Reduction to revenue, rent concessions	$ (9,200)

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The current amount of expenditures for a real estate project that has not yet been completed.

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