Fair Value of Financial Instruments - Summary of Fair Value Information of Financial Instruments (Parenthetical) (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) Health_Center	Dec. 31, 2021 USD ($)
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]
Mortgage loans	$ 364,101	$ 213,211
Investments in unconsolidated real estate joint ventures	1,497,903	1,152,927
Investments in unconsolidated operating entities	1,444,872	1,289,434
Shareholder Loan [Member]
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]
Mortgage loans	223,800	70,100
Investments in unconsolidated real estate joint ventures	315,900	335,600
Loans [Member]
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]
Investments in unconsolidated operating entities	640,400	521,400
Other loans	$ 225,500	$ 64,500
Fair Value, Recurring | Colombia [Member]
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]
Number of facilities acquired | Health_Center	3
Fair Value, Recurring | Acquisition Loans [Member] | Colombia [Member]
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]
Number of facilities acquired | Health_Center	3