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Credit Agreements - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Mar. 31, 2020
Mar. 31, 2020
Mar. 31, 2021
Jan. 22, 2021
Dec. 31, 2020
Apr. 28, 2020
Jan. 31, 2020
Debt Instrument [Line Items]              
Line of credit facility, amount borrowed   $ 436,000          
Line of credit issued         $ 436,000    
Accrued post-petition interest incurred     $ 35,329        
Revolving Credit Facility [Member]              
Debt Instrument [Line Items]              
Line of credit facility, amount borrowed $ 436,000            
Amount available for general purposes $ 950,000 $ 950,000       $ 442,000  
Weighted average interest rate on borrowings     8.50%        
Line of credit issued       $ 950,000      
Accrued post-petition interest incurred     $ 32,600        
Revolving Credit Facility [Member] | Financial Letter of Credit [Member]              
Debt Instrument [Line Items]              
Line of credit issued             $ 6,000