Leases - Schedule Of Net Investment In sale Type Lease Receivable (Detail) - Factory [Member] - CNY (¥) ¥ in Thousands	Dec. 31, 2024	Jan. 31, 2024	Dec. 31, 2023
Lessor, Lease, Description [Line Items]
Total minimum lease payments receivable	¥ 231,621		¥ 240,023
Less: Unearned income	(45,796)		(51,541)
Unguaranteed residuals	29,998		27,736
Net investment in lease payments receivable	215,823	¥ 4,477	216,218
Current portion	11,388		11,100
Non-current portion	¥ 204,435		¥ 205,118

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479773/842-30-50-3

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479773/842-30-50-10

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- Definition

Amount of undiscounted lease receivable in excess of discounted receivable for sales-type and direct financing leases.

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- Definition

Amount, after allowance for credit loss, of net investment in sales-type lease.

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Amount, after allowance for credit loss, of net investment in sales-type lease, classified as current.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-SubTopic 30
-Topic 842
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479016/842-30-45-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-SubTopic 30
-Topic 842
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479016/842-30-45-2

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- Definition

Amount, after allowance for credit loss, of net investment in sales-type lease, classified as noncurrent.

+ References

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- Definition

Present value expected to be derived from underlying asset following end of lease term not guaranteed by lessee or other third party unrelated to lessor.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479773/842-30-50-6

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