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Leases - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Jan. 01, 2019
Leases [Abstract]      
Lease liability $ 94,006   $ 100,000
Weighted Average Remaining Lease Term 5 years 3 months 18 days    
Rental expense $ 36,000 $ 28,000  
Acquired right-of-use assets in exchange for new operating lease liabilities $ 118,000    
Total right-of-use assets acquired during 2019     $ 100,000