Annual report pursuant to Section 13 and 15(d)

Schedule of Aggregate Lease Costs by Lease Classification (Parenthetical) (Detail)

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Schedule of Aggregate Lease Costs by Lease Classification (Parenthetical) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Lease Cost [Line Items]    
Lease payments $ 271,787 $ 281,895
Equipment | Utilities and Other    
Lease Cost [Line Items]    
Short term lease payments 465 4,700
Real Estate | Facility Lease Expense    
Lease Cost [Line Items]    
Variable lease payments 7,058 68,799
Lease payments $ 1,445 $ 1,614