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Geographic Information and Concentrations - Concentration Risk (Details) - Revenue - Collaboration partnership concentration risk	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
KKC
Concentration Risk [Line Items]
Concentration risk (percent)	100.00%	89.00%	15.00%
Knight
Concentration Risk [Line Items]
Concentration risk (percent)	0.00%	11.00%	0.00%
Fosun Pharma
Concentration Risk [Line Items]
Concentration risk (percent)	0.00%	0.00%	57.00%
XuanZhu
Concentration Risk [Line Items]
Concentration risk (percent)	0.00%	0.00%	28.00%

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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