Property and Equipment, Net - Additional Information (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2023 CNY (¥)
Property, Plant and Equipment [Line Items]
Depreciation expenses	¥ 11,450	$ 1,637	¥ 22,040	¥ 27,842
impairment recognized on property and equipment	¥ 0		¥ 0	¥ 0

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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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.

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The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

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