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