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Commitment and Contingencies - Schedule of Operating Right-of-use Assets and Lease Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Right-of-use assets:    
Operating lease right-of-use assets, net (including amounts with related parties) $ 18,138 $ 20,131
Short-term lease liabilities:    
Operating lease liabilities (including amounts with related parties) 5,015 4,808
Long-term lease liabilities:    
Operating lease liabilities, less current portion (including amounts with related parties) 16,179 18,831
Total lease liabilities:    
Operating lease liabilities (including amounts with related parties) $ 21,194 $ 23,639
Other information    
Weighted average remaining lease term 3 years 10 months 24 days 5 years
Weighted average discount rate 9.00% 9.00%