Combined square meter area for manufacturing facilities under lease.

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- Definition

Land use rights, net assets.

+ References

No definition available.

+ Details

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- Definition

Lease expiration month and year.

+ References

No definition available.

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- Definition

Lease termination.

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No definition available.

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- Definition

Square meter area for laboratory center under lease.

+ References

No definition available.

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- Definition

Square meter area for office space under lease.

+ References

No definition available.

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- Definition

Square meter area for staff dormitory under lease.

+ References

No definition available.

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- Definition

Staff dormitory lease expiration month and year.

+ References

No definition available.

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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/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-2

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-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

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- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-4

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-1

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-1

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- Definition

The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
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- Definition

Amount of short-term lease cost, excluding expense for lease with term of one month or less.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 53
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-URI https://asc.fasb.org/1943274/2147479589/842-20-55-53

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Leases - Additional Information (Detail) $ in Thousands		3 Months Ended		6 Months Ended
Leases - Additional Information (Detail) $ in Thousands	May 04, 2026	Jun. 30, 2026 USD ($) m²	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) m²	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Lessee Lease Description [Line Items]
Short-term lease expenses \| $		$ 18	$ 32	$ 35	$ 48
Right-of-use assets \| $		3,279		3,279		$ 3,609
Operating lease, liability \| $		3,418		3,418
Operating lease expense \| $		400	$ 500	900	$ 800
Security deposits \| $		$ 500		$ 500
Combined square meter area for manufacturing facilities under lease \| m²		66,559		66,559
Land use rights, net assets \| $		$ 1,500		$ 1,500
Beijing [Member]
Lessee Lease Description [Line Items]
Square meter area for office space under lease \| m²		2,130		2,130
Lease expiration month and year				2027-06
Square meter area for staff dormitory under lease \| m²		249		249
Staff dormitory lease expiration month and year				2028-03
Zhengzhou [Member]
Lessee Lease Description [Line Items]
Square meter area for laboratory center under lease \| m²		180		180
Lease expiration month and year				2026-08
Shanghai [Member]
Lessee Lease Description [Line Items]
Square meter area for laboratory center under lease \| m²		224		224
Lease expiration month and year				2026-12
Shanghai [Member] \| Cullgen [Member] \| Minimum [Member]
Lessee Lease Description [Line Items]
Lease expiration month and year				2026-11
Shanghai [Member] \| Cullgen [Member] \| Maximum [Member]
Lessee Lease Description [Line Items]
Lease expiration month and year				2037-02
Nanjing [Member]
Lessee Lease Description [Line Items]
Square meter area for laboratory center under lease \| m²		70		70
Lease expiration month and year				2027-02
California [Member]
Lessee Lease Description [Line Items]
Lease termination month and year	2026-07
California [Member] \| Cullgen [Member]
Lessee Lease Description [Line Items]
Lease expiration month and year				2028-07