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Commitments and Contingencies - Additional Information (Detail) - Novo License Agreement $ in Millions	Feb. 28, 2007 USD ($)
Developmental and Regulatory Milestone Payment | Type 1 Diabetes
Commitments And Contingencies [Line Items]
Potential milestone payment	$ 9.0
Developmental and Regulatory Milestone Payment | Type 2 Diabetes | Maximum
Commitments And Contingencies [Line Items]
Potential milestone payment	50.5
Developmental and Regulatory Milestone Payment | Other Indication | Maximum
Commitments And Contingencies [Line Items]
Potential milestone payment	115.0
Sales-based Milestones Payment
Commitments And Contingencies [Line Items]
Potential milestone payment	$ 75.0

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