Summary of Significant Accounting Policies - Segment Information (Details) - segment	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Segment Information
Number of operating segments	1
Other customers \| Revenue \| Customer concentration
Segment Information
Percentages of revenue recognized	0.00%	0.00%
Specialty distributors and pharmacy providers \| Revenue \| Customer concentration
Segment Information
Percentages of revenue recognized	59.00%
Roche \| Revenue \| Customer concentration
Segment Information
Percentages of revenue recognized		17.00%
Huadong \| Revenue \| Customer concentration
Segment Information
Percentages of revenue recognized		59.00%
Lilly \| Revenue \| Customer concentration
Segment Information
Percentages of revenue recognized	10.00%	24.00%
Vertex Pharmaceuticals Incorporated [Member] \| Revenue \| Customer concentration
Segment Information
Percentages of revenue recognized	30.00%

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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