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Other Operating Expenses - Summary of Other Operating Expenses (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024 CNY (¥)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2022 CNY (¥)
Profit or loss [abstract]
Impairment loss on investment in joint venture	¥ 0	$ 0	¥ 0	¥ 990
Impairment on property, plant and equipment	0	0	36,720	0
Reversal of provision for onerous contract, net	0	0	0	(4,829)
Foreign exchange loss, net	5,670	790	482	555
Loss on disposal of property, plant and equipment	59	8	0	0
Loss on Liquidation of Joint Venture	399	56	0	0
Loss on liquidation of subsidiary	5	1	0	0
Write-back of unrecoverable value-added tax	0	0	(11,164)	0
Others	5,465	762	900	877
Other operating expenses	¥ 11,598	$ 1,617	¥ 26,938	¥ (2,407)

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- Definition

Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss, investment in joint venture.

+ References

No definition available.

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- Definition

Loss on liquidation of joint venture.

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No definition available.

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Loss on liquidation of subsidiaries.

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- Definition

Other operating expenses reversal of provision for onerous contract net. .

+ References

No definition available.

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Others Operating Expense

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- Definition

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No definition available.

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Adjustments for impairment loss (reversal of impairment loss) on property, plant and equipment recognised in profit or loss to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss; Property, plant and equipment]

+ References

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- Definition

The losses on the disposal of property, plant and equipment. [Refer: Property, plant and equipment]

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The net loss arising from exchange differences recognised in profit or loss, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: Foreign exchange gain (loss)]

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The amount of operating income (expense) that the entity does not separately disclose in the same statement or note.

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