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Variable Interest Entity - Summary of Equity Method Investment (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Acquisition And Variable Interest Entity [Line Items]        
Beginning balance     $ 3,825  
Share of Net Income $ 565 $ 562 885 $ 323
Ending balance $ 4,494   $ 4,494  
Beijing Falikang Pharmaceutical Co. Ltd [Member]        
Acquisition And Variable Interest Entity [Line Items]        
Ownership Percentage 51.10%   51.10%  
Beginning balance     $ 3,825  
Share of Net Income     885  
Currency Translation     (216)  
Ending balance $ 4,494   $ 4,494