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Relationship with Universal Health Realty Income Trust and Other Related Party Transactions - Additional Information 2 (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 USD ($) Bed | Mar. 31, 2024 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2014 USD ($)
Related Party Transaction [Line Items] |  |  |  |  |  |
Lease and rental expense | $ 36,813 | $ 35,450 |  |  |  |
Financial liability | 73,000 |  | $ 74,000 |  |  | $ 74,000
Relationship with Universal Health Realty Income Trust |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Lease and rental expense | $ 5,000 | $ 5,000 |  |  |  |
Notice period on renewal of lease | 90 days |  |  |  |  |
Behavioral Health Care Facility | Relationship with Universal Health Realty Income Trust |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Lease and rental expense |  |  |  | $ 2,700 | $ 2,600 | $ 2,800
Notice period on renewal of lease | 270 days |  |  |  |  |
Number of bed available in behavioral health care facility | Bed | 100 |  |  |  |  |
Period of rights of refusal to leased facilities | 30 days |  |  |  |  |

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