Related Parties - Summary of Sales to and Purchases from ATR's Minority Shareholder and Its Affiliates (Detail) ¥ in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2024 CNY (¥)	Jun. 30, 2023 USD ($)	Jun. 30, 2023 CNY (¥)	Jun. 30, 2024 USD ($)	Jun. 30, 2024 CNY (¥)	Jun. 30, 2023 USD ($)	Jun. 30, 2023 CNY (¥)
Related Party Transaction [Line Items]
Sales to related parties	$ 110,988		$ 107,211		$ 221,203		$ 212,014
ATR [Member]
Related Party Transaction [Line Items]
Purchases from related parties	1,901	¥ 13,740	1,880	¥ 13,223	3,138	¥ 22,588	3,323	¥ 23,133
ATR [Member] | Related Party [Member]
Related Party Transaction [Line Items]
Sales to related parties	$ 3,935	¥ 28,505	$ 303	¥ 2,342	$ 8,173	¥ 58,824	$ 2,723	¥ 18,960