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Variable Interest Entity - Summary of Equity Method Investment (Detail) - Beijing Falikang Pharmaceutical Co. Ltd [Member] - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021
Acquisition And Variable Interest Entity [Line Items]
Ownership Percentage	51.10%
Beginning balance	$ 2,728
Share of Net Income	323
Currency Translation	32
Ending balance	$ 3,083

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