Amount of income (expense) related to nonoperating activities, classified as other.

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- Definition

Amount of revenue from collaborative arrangement. Excludes revenue from contract with customer under Topic 606.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Collaboration, license and funding arrangements.

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- Definition

Collaborative Arrangement, Rights and Obligations, Maximum Aggregate Milestone Payments

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- Definition

Collaborative Arrangement, Rights and Obligations, Maximum Aggregate Milestone Payments, Per Product

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Collaborative Arrangement, Rights and Obligations, Maximum Aggregate Milestone Payments, Remaining

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- Definition

Grant and incentive receivables.

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Balance Type:	debit
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- Definition

Milestone Payments

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- Definition

Revenue, Performance Obligation, Percentage of Net Sale

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License, and Funding Agreements - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)
Collaboration License And Funding Arrangements [Line Items]
Other income, net	$ 144,000	$ 202,000	$ 249,000	$ 325,000
Collaborative Arrangement, Rights and Obligations, Maximum Aggregate Milestone Payments, Remaining			3,000,000.0
Collaborative Arrangement, Rights and Obligations, Maximum Aggregate Milestone Payments			5,000,000.0
Research and Development Incentive
Collaboration License And Funding Arrangements [Line Items]
Grant receivable	900,000		900,000
Other income, net			300,000	$ 300,000
Genzyme Agreement
Collaboration License And Funding Arrangements [Line Items]
Milestone Payments			13,000,000
Collaborative Arrangement, Rights and Obligations, Maximum Aggregate Milestone Payments, Per Product	$ 7,000,000		$ 7,000,000
Genzyme Agreement \| 6% Net Sales
Collaboration License And Funding Arrangements [Line Items]
Revenue, Performance Obligation, Percentage of Net Sale	0.06		0.06
Revenue from Collaborative Arrangement, Excluding Revenue from Contract with Customer			$ 150,000,000
Genzyme Agreement \| 10% Net Sales
Collaboration License And Funding Arrangements [Line Items]
Revenue, Performance Obligation, Percentage of Net Sale	0.10		0.10
Genzyme Agreement \| 10% Net Sales \| Minimum
Collaboration License And Funding Arrangements [Line Items]
Revenue from Collaborative Arrangement, Excluding Revenue from Contract with Customer			$ 150,000,000
Genzyme Agreement \| 10% Net Sales \| Maximum
Collaboration License And Funding Arrangements [Line Items]
Revenue from Collaborative Arrangement, Excluding Revenue from Contract with Customer			$ 300,000,000
Genzyme Agreement \| 12% Net Sales
Collaboration License And Funding Arrangements [Line Items]
Revenue, Performance Obligation, Percentage of Net Sale	0.12		0.12
Revenue from Collaborative Arrangement, Excluding Revenue from Contract with Customer			$ 300,000,000