Property and Equipment, Net (Detail) ¥ in Thousands, $ in Thousands	Dec. 31, 2022 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 CNY (¥)
Property, Plant and Equipment [Line Items]
Less: Accumulated depreciation	¥ 185,105	$ 26,838	¥ 145,529
Less: Accumulated impairment	8,688	1,260	8,708
Property and equipment, net	58,727	8,515	101,794
Electronic equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	61,894	8,974	64,420
AI related equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	153,580	22,267	152,177
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	14,544	2,109	14,522
Office equipment and fixtures
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	19,532	2,832	20,867
Motor vehicles [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	2,922	424	¥ 4,045
Construction in progress
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	¥ 48	$ 7

Accumulated impairment of property plant and equipment.

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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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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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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