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Commitments. Contingencies and Uncertainties (Narrative) (Details) $ in Thousands	1 Months Ended	3 Months Ended			6 Months Ended
	Jan. 31, 2022 USD ($)	Jun. 30, 2022 USD ($) property tenant leaseAgreement operator jointVenture	Mar. 31, 2022 USD ($) property	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) property tenant leaseAgreement operator jointVenture	Jun. 30, 2021 USD ($)	May 31, 2022 property	Apr. 01, 2022 jointVenture property	Dec. 31, 2021 USD ($)
Commitment and Contingencies [Line Items]
Loans and leases agreement					$ 144,900
Mortgage and other notes receivable, net		$ 204,277			204,277				$ 299,952
Development commitments for construction and renovation		34,000			34,000
Amount funded toward the development commitments		24,000			24,000
Amount funded on real estate investments		1,000			1,000
Contingent lease inducement commitments and contingent consideration of acquisitions		28,600			28,600
Lease deposit liabilities		0			$ 0				$ 8,838
Amount transferred to an escrow account		$ 6,900
Number of joint ventures | jointVenture		2			2
Loss on operations transfer, net		$ (729)		$ 0	$ (729)	$ 0
Aggregate lease concessions granted to tenants
Commitment and Contingencies [Line Items]
Operating lease income					$ 44,000
Lease Payment Deferral
Commitment and Contingencies [Line Items]
Number of operators/tenants | tenant		3			3
Operating lease income		$ 2,900			$ 38,000
Encore Senior Living
Commitment and Contingencies [Line Items]
Loans and leases agreement	$ 28,500
Mortgage and other notes receivable, net		5,200			5,200
Discovery PropCo
Commitment and Contingencies [Line Items]
Development commitments for construction and renovation		2,000			2,000
Bickford Senior Living
Commitment and Contingencies [Line Items]
Loans and leases agreement					4,000
Mortgage and other notes receivable, net		$ 44,850			$ 44,850
Properties | property		37			37		3
Bickford Senior Living | Facilities Transitioned To Other Operators
Commitment and Contingencies [Line Items]
Properties | property			1
Bickford Senior Living | Lease Payment Deferral
Commitment and Contingencies [Line Items]
Operating lease income			$ 1,500		$ 26,000
Holiday Transition
Commitment and Contingencies [Line Items]
Mortgage and other notes receivable, net		$ 0			$ 0
Properties | property		17			17
Lease deposit liabilities			$ 8,800
Number of joint ventures | jointVenture								2
Holiday Transition | Facilities Transitioned To Other Operators
Commitment and Contingencies [Line Items]
Properties | property								1
Holiday Transition | Facilities Transitioned to SHOP Partnership Ventures
Commitment and Contingencies [Line Items]
Properties | property								15
Loans Receivable
Commitment and Contingencies [Line Items]
Number of operators/tenants | operator		5			5
Notes Receivable Remain Unfunded
Commitment and Contingencies [Line Items]
Mortgage and other notes receivable, net		$ 75,700			$ 75,700
Development Commitment
Commitment and Contingencies [Line Items]
Number of operators/tenants | property		11			11
Lease Inducement
Commitment and Contingencies [Line Items]
Amount funded on real estate investments		$ 1,500			$ 1,500
Properties | leaseAgreement		7			7
Collection of Rent Deferred | Lease Payment Deferral
Commitment and Contingencies [Line Items]
Operating lease income					$ 300
Rent Deferred Second Quarter of 2022 | Lease Payment Deferral
Commitment and Contingencies [Line Items]
Number of operators/tenants | tenant		7			7
Operating lease income					$ 9,200
First Quarter Collection of Rent Deferred | Lease Payment Deferral
Commitment and Contingencies [Line Items]
Operating lease income		$ 100			$ 200
Rent Deferred Second Quarter of 2021 | Lease Payment Deferral
Commitment and Contingencies [Line Items]
Operating lease income				9,900		14,100
Rent Deferred Second Quarter of 2021 | Bickford Senior Living | Lease Payment Deferral
Commitment and Contingencies [Line Items]
Operating lease income				$ 6,500		$ 10,300
Asset Held For Sale | Bickford Senior Living
Commitment and Contingencies [Line Items]
Properties | property		1			1
Asset Held For Sale | Holiday Transition
Commitment and Contingencies [Line Items]
Properties | property								1

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