For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Basis of Presentation and Significant Accounting Policies - Segment Information (Details) - segment	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Information
Number of operating segments			1
Other customers \| Revenue \| Customer concentration
Segment Information
Percentages of revenue recognized	0.00%	0.00%	0.00%	0.00%
Roche \| Revenue \| Customer concentration
Segment Information
Percentages of revenue recognized	50.00%	99.00%	26.00%
Roche \| Revenue \| Customer concentration
Segment Information
Percentages of revenue recognized				99.00%
Huadong \| Revenue \| Customer concentration
Segment Information
Percentages of revenue recognized	50.00%		56.00%
Lilly \| Revenue \| Customer concentration
Segment Information
Percentages of revenue recognized			17.00%