Share-Based Compensation - Schedule of share-based compensation expenses of subsidiaries' share-based awards recognized by the group (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2023 CNY (¥)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	¥ 9,169	$ 1,311	¥ 10,023	¥ 8,024
Cost of revenues [member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	0	0	65	251
Research and Development Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	1,260	180	1,115	(703)
Selling and Marketing Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	56	8	(1,232)	104
General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	¥ 7,853	$ 1,123	¥ 10,075	¥ 8,372

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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+ Details