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Leases - Summary of Supplemental Cashflow Information Related to Leases (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:    
Operating cash flows from operating leases $ 11,576 $ 10,033
Right of use assets obtained in exchange for lease obligations:    
Operating leases $ 1,763 $ 10,870