Quarterly report pursuant to Section 13 or 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
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Lease Cost [Line Items]    
Lease payments   $ 211,940
Equipment | Utilities and Other    
Lease Cost [Line Items]    
Short term lease payments $ 452 1,808
Real Estate | Facility Lease Expense    
Lease Cost [Line Items]    
Variable lease payments 18,591 54,209
Lease payments $ 400 $ 1,184