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Leases - Schedule of Present Value of Lease Payments for Remaining Lease Term (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Assets    
Operating lease right-of-use assets $ 41,800  
Liabilities    
Current operating lease liabilities 20,894 $ 34,072
Noncurrent operating lease liabilities 44,737 84,902
Total lease liabilities 65,631 118,974
Other Assets [Member]    
Assets    
Operating lease right-of-use assets 49,772 93,924
Other Accrued Expenses [Member]    
Liabilities    
Current operating lease liabilities 20,894 34,072
Other Noncurrent Liabilities [Member]    
Liabilities    
Noncurrent operating lease liabilities $ 44,737 $ 84,902