Real Estate and Other Activities - 2025 Activity - Additional Information (Detail) $ in Thousands, SFr in Millions	1 Months Ended	3 Months Ended				9 Months Ended
	Apr. 30, 2025 CHF (SFr)	Sep. 30, 2026 CHF (SFr)	Mar. 31, 2026 USD ($)	Sep. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Debt Instrument [Line Items]
Cash paid for acquisitions of real estate assets						$ 29,322	$ 110,089
Steward Health Care System LLC [Member]
Debt Instrument [Line Items]
Total assets acquired								$ 47,000
Swiss Medical Network [Member]
Debt Instrument [Line Items]
Cash paid for acquisitions of real estate assets | SFr	SFr 50
Proceeds from short-term loan | SFr	SFr 25
Repayments of short-term debt | SFr		SFr 25
Lifepoint Behavioral Health and Surgery Partners [Member]
Debt Instrument [Line Items]
Profit (loss) from real estate operations				$ 36,000
Lifepoint Behavioral [Member]
Debt Instrument [Line Items]
Profit (loss) from real estate operations			$ 10,700		$ 10,500