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
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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Business concentrations - Summary of Vendors with Product Purchases (Details) - Product purchases [Member] - Vendor Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Catalent [Member]
Disclosure Of Vendors With Product Purchases And Accounts Payable For The Periods [Line Items]
Concentration Risk, Percentage	33.00%	30.00%	24.00%
Vendor A [Member]
Disclosure Of Vendors With Product Purchases And Accounts Payable For The Periods [Line Items]
Concentration Risk, Percentage	36.00%	25.00%
Vendor B [Member]
Disclosure Of Vendors With Product Purchases And Accounts Payable For The Periods [Line Items]
Concentration Risk, Percentage	27.00%	36.00%	27.00%
Vendor I [Member]
Disclosure Of Vendors With Product Purchases And Accounts Payable For The Periods [Line Items]
Concentration Risk, Percentage			35.00%