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Variable Interest Entities - Additional Information (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2022 USD ($) Facility	Dec. 31, 2021 USD ($)
Variable Interest Entity [Line Items]
Consolidated assets	$ 4,882,639	$ 4,768,078
Consolidated liabilities	$ 2,144,122	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	$ 364,506	320,639
Consolidated liabilities	$ 24,198	$ 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%

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