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Schedule of Aggregate Lease Costs by Lease Classification (Parenthetical) (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Lease Cost [Line Items]    
Lease payments $ 70,539 $ 69,974
Equipment | Utilities and Other    
Lease Cost [Line Items]    
Short term lease payments 413 620
Real Estate | Facility Lease Expense    
Lease Cost [Line Items]    
Variable lease payments 12,247 15,934
Lease payments $ 460 $ 402