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Leases - Supplemental Cash Flow Information Related to the Company's Leases (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Lease Cost [Abstract]        
Operating cash flows from operating leases $ 1,713 $ 1,128 $ 3,423 $ 3,710
Right-of-use assets obtained in exchange for operating lease obligations: $ 166 $ 41,190 $ 17,543 $ 41,571