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Investment Activity (Schedule of Tenant Concentrations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Real Estate [Line Items]
Gross Real Estate	$ 2,953,548	$ 2,780,358
Total gross real estate	2,592,587
Loans an leases receivable, gross	289,175
Revenues	257,049	249,227	$ 217,700
Escrow funds received from tenants for property operating expenses	11,165	11,513	9,788
Resident fees and services	54,421	48,809	35,796
Total revenues	$ 335,181	$ 319,835	$ 278,194
Percentage of continuing revenue	16.00%	15.00%	13.00%
Senior Living Communities
Real Estate [Line Items]
Gross Real Estate	$ 577,243
Notes Receivable	43,916
Revenues	$ 53,570	$ 51,274	$ 51,183
Percentage of continuing revenue	16.00%	16.00%	18.00%
Bickford
Real Estate [Line Items]
Gross Real Estate	$ 428,068
Notes Receivable	16,072
Revenues	$ 41,720	$ 38,688
Percentage of continuing revenue	12.00%	12.00%
National HealthCare Corporation
Real Estate [Line Items]
Gross Real Estate	$ 133,770
Notes Receivable	0
Revenues	$ 40,016	$ 37,335	$ 36,893
Percentage of continuing revenue	12.00%	12.00%	13.00%
All others, net
Real Estate [Line Items]
Gross Real Estate	$ 1,453,506
Notes Receivable	229,187
Revenues	$ 134,289	$ 132,216	$ 144,534
Percentage of continuing revenue	41.00%	41.00%	52.00%
Tenants With Escrow Funds
Real Estate [Line Items]
Percentage of continuing revenue	3.00%	4.00%	4.00%
More than 10% Operators
Real Estate [Line Items]
Revenues	$ 280,760	$ 271,026	$ 242,398

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