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The CARES Act - Additional Information (Detail) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Apr. 24, 2020
Apr. 30, 2021
Aug. 31, 2020
Apr. 30, 2020
Dec. 31, 2021
Sep. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2017
CARES Act [Line Items]                        
Income from relief fund                 $ 17,900 $ 32,819    
Expected repay of payroll tax deferrals           $ 39,000            
Received benefit in form of refunds and lower future tax payments                 51,600 51,600    
Received benefit related to interest expense                 22,800 22,800    
Received benefit related to qualified improvement property legislation                 20,500 20,500    
Expected permanent cash benefit due to loss                 $ 8,300 $ 8,300    
Effective income tax rate reconciliation at federal statutory income tax rate                 21.00% 21.00% 21.00% 35.00%
CARES Act [Member]                        
CARES Act [Line Items]                        
Offer of eligible relief amount               $ 100,000,000        
Additional offer of eligible relief amount $ 75,000,000                      
Remaining unrecognized funds         $ 6,300       $ 6,300      
Cash benefit relating to delay of payment of social security payroll taxes                 $ 39,000      
Net operating loss carryforwards and carrybacks offset percentage of taxable income                 100.00%      
Net operating loss carried back period                 5 years      
CARES Act [Member] | Medicare [Member]                        
CARES Act [Line Items]                        
Repayment of advanced payments           $ 25,000            
Percentage of increase in medicare reimbursement rate               2.00%        
Repayment of advanced payments period       2022                
CARES Act [Member] | Public Health and Social Services Emergency Fund [Member]                        
CARES Act [Line Items]                        
Receipt of CARES Act of 2020 aid amount               $ 19,700 $ 34,900      
Receipt of additional CARES Act of 2020 aid amount   $ 24,200 $ 12,800                  
Income from relief fund         $ 17,900              
Other income             $ 32,800 18,100        
CARES Act [Member] | CMS' Accelerated and Advance Payment Program [Member] | Medicare [Member]                        
CARES Act [Line Items]                        
Amount of advance payment received               $ 45,000