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Investment Activity (Tenant Concentration) (Details) $ in Thousands |  | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 01, 2024 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) state property | Dec. 31, 2022 USD ($) property | Dec. 31, 2024 USD ($) | Dec. 31, 2024 property | Dec. 31, 2024 state | Dec. 31, 2024 unit | Dec. 31, 2024 facility | Dec. 31, 2024 masterLease | Dec. 31, 2024 boardMember | Dec. 31, 2024 shares | Feb. 28, 2023 unit | Jun. 30, 2021 facility
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nonportfolio assets, original cost |  |  |  |  |  | $ 2,600 |  |  |  |  |  |  |  |  |
Real estate investment property, portfolio assets |  |  |  | $ 358,400 |  |  |  |  |  |  |  |  |  |  |
Mortgage and other notes receivable, net of reserve |  |  |  | 15,476 | $ 20,200 | 20,249 |  |  |  |  |  |  |  |  |
Straight-line rent income, net of write-offs |  |  | $ 3,031 | 6,961 | (16,681) |  |  |  |  |  |  |  |  |  |
Lessor, operating lease, renewal term |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Number of board of directors members also members of NHC board of directors | boardMember |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |
Lease incentive payments, net |  |  |  | 10,669 |  | 7,877 |  |  |  |  |  |  |  |  |
Rental income |  |  | $ 257,049 | 249,227 | 217,700 |  |  |  |  |  |  |  |  |  |
Lease Extended Until 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease escalator minimum | 2.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual lease cap | 3.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Living Communities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating lease maturity date extension |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for capital improvements |  | $ 10,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Rental revenue increase at lease rate |  | 0.085 |  |  |  |  |  |  |  |  |  |  |  |  |
Straight-line rent income, net of write-offs |  |  | 200 | 1,200 | 400 |  |  |  |  |  |  |  |  |  |
Rental income |  |  | $ 53,570 | 51,274 | 51,183 |  |  |  |  |  |  |  |  |  |
National HealthCare Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of master leases | masterLease |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |
Lessor, operating lease, renewal term |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Lessor equity shares owned, significant lessee (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  | 1,630,642 |  |
Rental income |  |  | $ 40,016 | 37,335 | 36,893 |  |  |  |  |  |  |  |  |  |
National HealthCare Corporation | NHC - 1991 Lease |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage rent rate |  |  | 4.00% |  |  |  |  |  |  |  |  |  |  |  |
Bickford |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Properties |  |  |  |  |  |  | 4 |  |  | 38 |  |  |  |  |
Write off of financing receivable |  |  |  |  | 18,100 |  |  |  |  |  |  |  |  |  |
Rental income |  |  | $ 41,720 | 38,688 |  |  |  |  |  |  |  |  |  |  |
Maximum capital improvements commitment | $ 8,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual rent increase | 8.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset acquisition, rent deferral deduction |  |  |  |  |  | $ 12,900 |  |  |  |  |  |  |  |  |
Bickford | Bickford |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of units in real estate property | unit |  |  |  |  |  |  |  |  |  |  |  |  |  | 64 |
Payments for rent |  |  | 5,100 | 2,300 | 200 |  |  |  |  |  |  |  |  |  |
Bickford | Bickford Senior Living Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for rent |  |  |  | 2,500 | 3,000 |  |  |  |  |  |  |  |  |  |
Bickford | Lease Extended Until 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rental income | $ 34,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash Basis Lessees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Write off of financing receivable |  |  |  |  | 9,000 |  |  |  |  |  |  |  |  |  |
Lease incentive payments, net |  |  |  |  | 7,100 |  |  |  |  |  |  |  |  |  |
Rental income |  |  | 49,981 | 45,796 | 35,331 |  |  |  |  |  |  |  |  |  |
Cash Basis Lessees | Bickford |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rental income |  |  | $ 38,971 | $ 33,352 | $ 27,650 |  |  |  |  |  |  |  |  |  |
Holiday Acquisition Holdings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Properties | facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 17
NHC - 1991 Lease | Senior Living Communities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Properties | property |  |  |  |  |  |  | 10 |  |  |  |  |  |  |  |
Number of units in real estate property | unit |  |  |  |  |  |  |  |  | 2,232 |  |  |  |  |  |
Revenue as % of Total, Exceeds 10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of states in which entity operates | state |  |  |  | 2 |  |  |  | 2 |  |  |  |  |  |  |
Geographic Concentration Risk | SOUTH CAROLINA | Investment Consideration Benchmark |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of continuing revenue |  |  | 11.60% | 12.10% |  |  |  |  |  |  |  |  |  |  |
Geographic Concentration Risk | TEXAS | Investment Consideration Benchmark |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of continuing revenue |  |  | 10.10% | 10.70% |  |  |  |  |  |  |  |  |  |  |
Independent Living Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of states in which entity operates | state |  |  |  |  |  |  |  | 8 |  |  |  |  |  |  |
Properties | property |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |
Skilled Nursing Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Properties | facility |  |  |  |  |  |  |  |  |  | 32 |  |  |  |  |
Skilled Nursing Facilities | National HealthCare Corporation | Subleased Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Properties | property |  |  |  |  |  |  | 4 |  |  |  |  |  |  |  |
Facilities Transitioned To Other Operators | Bickford |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Properties | property |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |
Write off of financing receivable |  |  |  |  | $ 700 |  |  |  |  |  |  |  |  |  |
Facilities Transitioned To Other Operators | Holiday Acquisition Holdings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Properties | property |  |  |  | 2 | 2 |  | 2 |  |  |  |  |  |  |  |

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