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Leases - Summary of Quantitative Information about Right of Use Assets and Lease Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Right-of-use asset      
Right-of-use assets $ 5,183 $ 5,076 $ 6,917
Lease liabilities      
Current 1,105 850  
Non-current 4,886 5,303  
Total 5,991 6,153 $ 7,675
Office buildings [Member]      
Right-of-use asset      
Right-of-use assets $ 5,183 $ 5,076