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Collaboration and other arrangements (Details) - Master Clinical Trial Collaboration and Supply Agreement - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Mar. 31, 2023
Significant agreements |  |  |  |  |
Offset to research and development expense | $ 1,000,000 | $ 0 | $ 1,700,000 | $ 0 |
Payments received |  |  | 900,000 | $ 0 |
Receivables | $ 1,700,000 |  | $ 1,700,000 |  | $ 900,000

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- Definition Collaborative Arrangement, Offset to Research and Development Expense + References No definition available. + Details
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- Definition Collaborative Arrangement, Receivable from Other Party + References No definition available. + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 808 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479402/808-10-50-1 + Details
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- Definition The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
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- Details
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