Variable Interest Entities - Additional Information (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($) Facility	Dec. 31, 2021 USD ($)
Variable Interest Entity [Line Items]
Consolidated assets	$ 4,834,639	$ 4,768,078
Consolidated liabilities	$ 2,189,825	2,185,201
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Number of facilities operated through non-wholly owned subsidiaries \| Facility	6
Consolidated assets	$ 337,307	320,639
Consolidated liabilities	$ 26,103	$ 24,110
Variable Interest Entity, Primary Beneficiary [Member] \| Minimum [Member]
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage	60.00%
Variable Interest Entity, Primary Beneficiary [Member] \| Maximum [Member]
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage	86.00%

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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+ Details

- Definition

Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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