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Investment Activity (Schedule of Tenant Concentrations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Tenant Concentration [Line Items]
Gross Real Estate	$ 3,031,719		$ 2,953,548
Total Gross Real Estate	2,669,300
Total Notes Receivable	278,680
Revenues	68,866	$ 62,187
Escrow funds received from tenants for property operating expenses	2,887	2,733
Resident fees and services	13,939	13,256
Total revenues	$ 89,296	$ 81,513
Percentage of continuing revenue	16.00%	16.00%
Senior Living Communities, LLC (“Senior Living”)
Tenant Concentration [Line Items]
Gross Real Estate	$ 577,493
Notes Receivable	47,686
Revenues	$ 13,727	$ 12,815
Percentage of continuing revenue	15.00%	16.00%
Bickford Senior Living (“Bickford”)
Tenant Concentration [Line Items]
Gross Real Estate	$ 428,342
Notes Receivable	16,044
Revenues	$ 10,651	$ 10,054
Percentage of continuing revenue	12.00%	12.00%
National HealthCare Corporation (“NHC”)
Tenant Concentration [Line Items]
Gross Real Estate	$ 133,770
Notes Receivable	0
Revenues	$ 10,785	$ 11,246
Percentage of continuing revenue	12.00%	14.00%
All others, net
Tenant Concentration [Line Items]
Gross Real Estate	$ 1,529,695
Notes Receivable	214,950
Revenues	$ 37,307	$ 31,409
Percentage of continuing revenue	42.00%	39.00%
Tenants With Escrow Funds
Tenant Concentration [Line Items]
Percentage of continuing revenue	3.00%	3.00%
More than 10% Operators
Tenant Concentration [Line Items]
Revenues	$ 75,357	$ 68,257

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