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Prepetition Revolving Credit Facility, Senior Notes and Exit Debt - Exit Revolving Credit Agreement - Additional Information (Detail) - USD ($)
4 Months Ended 6 Months Ended
Apr. 23, 2021
Apr. 23, 2021
Jun. 30, 2021
Jul. 30, 2021
Jan. 31, 2021
Jan. 22, 2021
Dec. 31, 2020
Apr. 28, 2020
Apr. 26, 2020
Debt Instrument [Line Items]                  
Line of credit             $ 436,000,000    
Debt issuance costs   $ 6,218,000              
Senior Secured Revolving Credit Facility [Member]                  
Debt Instrument [Line Items]                  
Amount available for general purposes $ 400,000,000.0 400,000,000.0              
Sublimit for issuance of letters of credit $ 100,000,000.0 100,000,000.0              
Credit facility, scheduled maturity date Apr. 22, 2026                
Exit Revolving Credit Facility [Member]                  
Debt Instrument [Line Items]                  
Amount available for general purposes               $ 442,000,000.0 $ 950,000,000.0
Line of credit $ 103,500,000 103,500,000 $ 133,500,000   $ 442,000,000.0 $ 950,000,000.0     $ 436,000,000.0
Incurred in exchange for certain obligations 100,000,000.0                
Upfront fees incurred 3,500,000                
Aggregate amount of available cash triggering repayment of debt $ 125,000,000 $ 125,000,000              
Debt instrument, interest rate term description     Loans outstanding under the Exit RCF bear interest at a rate per annum equal to the applicable margin plus, at the Borrower’s option, either: (i) the reserve-adjusted London Inter-bank Offered Rate (or LIBOR Rate), subject to a floor of 1%, or (ii) a base rate, subject to a floor of 2.00%, determined as the greatest of (x) the rate per annum publicly announced from time to time by Wells Fargo Bank, National Association, as its prime rate (or the Wells Fargo Prime Rate), (y) the federal funds effective rate plus ½ of 1.00%, and (z) the reserve-adjusted one-month LIBOR Rate plus 1.00%. The applicable margin is initially 4.25% per annum for LIBOR Rate loans and 3.25% per annum for base rate loans. Mandatory prepayments and, under certain circumstances, commitment reductions are required under the Exit RCF in connection with certain specified asset dispositions (subject to reinvestment rights if no event of default exists). Available Cash (as defined in the Exit Revolving Credit Agreement) in excess of $125 million is also required to be applied periodically to prepay loans (without a commitment reduction). The loans under the Exit RCF may be voluntarily prepaid and the commitments thereunder voluntarily terminated or reduced by the Borrower at any time without premium or penalty, other than customary breakage costs.            
Line of credit facility commitment fee percentage 0.50%                
Minimum line of credit collateral coverage ratio 2.00%                
Minimum line of credit total collateral coverage ratio 1.30%                
Debt issuance costs $ 6,600,000                
Upfront fees $ 3,500,000                
Borrowing accrue interest 5.25% 5.25%              
Exit Revolving Credit Facility [Member] | Subsequent Event [Member]                  
Debt Instrument [Line Items]                  
Line of credit       $ 153,500          
Amount available for issuance of letter of credit under credit facility       243,900          
Exit Revolving Credit Facility [Member] | Financial Letter of Credit [Member]                  
Debt Instrument [Line Items]                  
Line of credit         $ 6,000,000.0        
Exit Revolving Credit Facility [Member] | Financial Letter of Credit [Member] | Subsequent Event [Member]                  
Debt Instrument [Line Items]                  
Line of credit       $ 6,100          
Exit Revolving Credit Facility [Member] | PIK Loans [Member]                  
Debt Instrument [Line Items]                  
Line of credit $ 3,500,000 $ 3,500,000              
Exit Revolving Credit Facility [Member] | Reserve-Adjusted LIBOR Rate Subject To Floor [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 1.00%                
Exit Revolving Credit Facility [Member] | Base Rate Subject to Floor [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 2.00%                
Exit Revolving Credit Facility [Member] | Federal Funds Effective Rate Plus [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 0.50%                
Exit Revolving Credit Facility [Member] | Reserve-Adjusted One Month LIBOR Rate Plus [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 1.00%                
Exit Revolving Credit Facility [Member] | Libor Rate Loans [Member]                  
Debt Instrument [Line Items]                  
Interest rate of senior notes 4.25% 4.25%              
Exit Revolving Credit Facility [Member] | Base Rate Loans [Member]                  
Debt Instrument [Line Items]                  
Interest rate of senior notes 3.25% 3.25%              
Exit Revolving Credit Facility [Member] | Minimum [Member]                  
Debt Instrument [Line Items]                  
Amount available for general purposes $ 400,000,000.0 $ 400,000,000.0              
Aggregate amount of available cash $ 125,000,000.0 $ 125,000,000.0              
Exit Revolving Credit Facility [Member] | Maximum [Member]                  
Debt Instrument [Line Items]                  
Collateral coverage ratio 2.00%                
Total collateral coverage ratio 1.30%