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Investment Activity (Schedule of Tenant Concentrations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Tenant Concentration [Line Items] |  |  |  |  |
Gross Real Estate | $ 2,812,153 |  | $ 2,812,153 |  | $ 2,780,358
Total Gross Real Estate | 2,473,953 |  | 2,473,953 |  |
Total notes receivable | 256,771 |  | 256,771 |  |
Revenues | 65,760 | $ 60,952 | 127,947 | $ 126,250 |
Escrow funds received from tenants for property operating expenses |  |  | 5,535 | 5,830 |
Resident fees and services | 13,390 | 11,793 | 26,645 | 23,493 |
Total revenues | 84,970 | $ 77,876 | $ 166,482 | $ 160,264 |
Percentage of continuing revenue |  |  | 16.00% | 15.00% |
Senior Living Communities, LLC (“Senior Living”) |  |  |  |  |
Tenant Concentration [Line Items] |  |  |  |  |
Gross Real Estate | 573,631 |  | $ 573,631 |  |
Notes Receivable | 45,375 |  | 45,375 |  |
Revenues |  |  | $ 26,406 | $ 25,658 |
Percentage of continuing revenue |  |  | 16.00% | 16.00% |
National HealthCare Corporation (“NHC”) |  |  |  |  |
Tenant Concentration [Line Items] |  |  |  |  |
Gross Real Estate | 133,770 |  | $ 133,770 |  |
Notes Receivable | 0 |  | 0 |  |
Revenues |  |  | $ 20,836 | $ 18,983 |
Percentage of continuing revenue |  |  | 13.00% | 12.00% |
Bickford |  |  |  |  |
Tenant Concentration [Line Items] |  |  |  |  |
Gross Real Estate | 426,798 |  | $ 426,798 |  |
Notes Receivable | 16,697 |  | 16,697 |  |
Revenues |  |  | $ 20,691 | $ 19,977 |
Percentage of continuing revenue |  |  | 12.00% | 12.00% |
All others, net |  |  |  |  |
Tenant Concentration [Line Items] |  |  |  |  |
Gross Real Estate | 1,339,754 |  | $ 1,339,754 |  |
Notes Receivable | $ 194,699 |  | 194,699 |  |
Revenues |  |  | $ 66,369 | $ 66,323 |
Percentage of continuing revenue |  |  | 40.00% | 41.00% |
Tenants With Escrow Funds |  |  |  |  |
Tenant Concentration [Line Items] |  |  |  |  |
Percentage of continuing revenue |  |  | 3.00% | 4.00% |
More than 10% Operators |  |  |  |  |
Tenant Concentration [Line Items] |  |  |  |  |
Revenues |  |  | $ 139,837 | $ 136,771 |

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