Quarterly report pursuant to Section 13 or 15(d)

Operating Leases - Schedule of Operating Lease Cost, Included in Selling, General and Administrative Expense (Detail)

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Operating Leases - Schedule of Operating Lease Cost, Included in Selling, General and Administrative Expense (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Operating lease cost:        
Lease cost $ 6,355 $ 6,148 $ 18,959 $ 18,163
Variable lease cost 1,485 1,423 4,096 3,913
Sublease income (50) (68) (216) (199)
Total operating lease cost $ 7,790 $ 7,503 $ 22,839 $ 21,877