Fair Value of Financial Instruments - Summary of Fair Value Information of Financial Instruments (Parenthetical) (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($) Health_Center	Dec. 31, 2021 USD ($)
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]
Mortgage loans	$ 224,281	$ 213,211
Investments in unconsolidated real estate joint ventures	1,534,514	1,152,927
Investments in unconsolidated operating entities	1,455,842	$ 1,289,434
Loans [Member]
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]
Mortgage loans	70,200
Investments in unconsolidated operating entities	650,100
Other loans	63,800
Shareholder Loan [Member]
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]
Investments in unconsolidated real estate joint ventures	$ 326,600
Fair Value, Recurring [Member] \| Colombia [Member]
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]
Number of facilities acquired \| Health_Center	3
Fair Value, Recurring [Member] \| Acquisition Loans [Member] \| Colombia [Member]
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]
Number of facilities acquired \| Health_Center	3

Financial instruments measured at fair value on recurring basis.

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- Definition

Investments in other loans.

+ References

No definition available.

+ Details

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- Definition

Investments In Unconsolidated Operating Entities

+ References

No definition available.

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- Definition

The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(c))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

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- Definition

The carrying amount of investments in unconsolidated real estate and other joint ventures not separately presented. This includes direct and indirect investments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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