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Related Parties - Summary of Loan Activity (Detail) ¥ in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2025 CNY (¥)	Jun. 30, 2024 USD ($)	Jun. 30, 2024 CNY (¥)
Related Party Transaction [Line Items]
Repayments			$ (664)
ATR [Member] | Minority Shareholder Loan [Member]
Related Party Transaction [Line Items]
Balance at beginning of the period	$ 0	¥ 0	665	¥ 4,713
Borrowings	0	0	0	0
Repayments	0	0	(664)	(4,713)
Foreign exchange	0	0	(1)	0
Balance at end of the period	$ 0	¥ 0	$ 0	¥ 0

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Foreign exchange related party debt.

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