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Leases - Narrative (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 USD ($) community | Sep. 30, 2025 USD ($) community lease | Mar. 31, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) community lease | Sep. 30, 2024 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Operating and financing leases, number of communities | community |  | 221 |  |  | 221 |
Number of communities leased | lease |  | 212 |  |  | 212 |
Financing leases, number of communities | lease |  | 9 |  |  | 9 |
Loss on extinguishment of debt |  | $ 326 |  | $ 2,267 | $ 35,661 | $ 2,267
Diversified Healthcare Trust |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Number of communities acquired | community | 25 |  |  |  |  |
Payments to acquire lease | $ 135,000 |  |  |  |  |
Annualized cash rent payments | $ 10,200 |  |  |  |  |
Welltower Inc. |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Number of communities acquired | community | 5 |  |  |  |  |
Payments to acquire lease | $ 175,000 |  |  |  |  |
Annualized cash rent payments | $ 13,700 |  |  |  |  |
Number of communities accounted for as failed sale-leaseback transaction | community | 3 |  |  |  |  |
Loss on extinguishment of debt |  |  | $ 32,800 |  |  |

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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481303/470-50-40-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481303/470-50-40-4 + Details
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