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Revenue - Additional Information (Detail) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Apr. 30, 2020
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]        
Accounts receivable, net   $ (41,978) $ 2,448 $ 15,340
Cost report payables   13,700 6,500  
Net adjustments to estimated cost report settlements resulted in (decreases) increases to revenue   100 (5,400) (1,300)
Costs of providing charity care services   6,400 3,800 $ 4,400
CARES Act [Member] | Medicare [Member]        
Disaggregation of Revenue [Line Items]        
Repayment of advanced payments     25,100  
CARES Act [Member] | CMS' Accelerated and Advance Payment Program [Member] | Medicare [Member]        
Disaggregation of Revenue [Line Items]        
Amount of advance payment received $ 45,200      
Repayment of advanced payments   20,100 25,100  
Repayment of advanced payments description In April 2020, the Company received approximately $45.2 million from CMS’ Accelerated and Advance Payment Program for Medicare providers. Of the $45.2 million of advance payments received in 2020, the Company repaid approximately $25.1 million of advance payments during 2021 and made additional payments of approximately $20.1 million during the year ended December 31, 2022.      
CARES Act [Member] | CMS' Accelerated and Advance Payment Program [Member] | Medicare [Member] | Other Accrued Liabilities [Member]        
Disaggregation of Revenue [Line Items]        
Contract liabilities   6,700 30,400  
Accounting Standards Update 2014-09        
Disaggregation of Revenue [Line Items]        
Accounts receivable, net   $ 61,400 $ 49,700