Leases - Schedule of Operating Lease (Detail)	3 Months Ended
Jul. 31, 2025 ft²
Massachusetts [Member] \| Office Space
Lessee, Lease, Description [Line Items]
Square footage	8,300
Lease Extension Options	None
Massachusetts [Member] \| Laboratory Facility
Lessee, Lease, Description [Line Items]
Square footage	500
Lease Extension Options	Option to renew annually
Framingham [Member] \| Corporate Headquarters
Lessee, Lease, Description [Line Items]
Square footage	32,110
Lease Extension Options	None
UT [Member] \| Office Space
Lessee, Lease, Description [Line Items]
Square footage	6,200
Lease Extension Options	None
United Kingdom [Member] \| Laboratory and Office Space Facility
Lessee, Lease, Description [Line Items]
Square footage	13,400
Lease Extension Options	None
Ireland \| Office Space
Lessee, Lease, Description [Line Items]
Square footage	1,100
Lease Extension Options	None
Japan \| Office Space
Lessee, Lease, Description [Line Items]
Square footage	237
Lease Extension Options	None
Switzerland [Member] \| Office Space
Lessee, Lease, Description [Line Items]
Square footage	7,200
Lease Extension Options	Option to renew annually
Germany \| Office Space
Lessee, Lease, Description [Line Items]
Square footage	215
Lease Extension Options	None

Area of land subject to a ground lease.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

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