Related Parties - Summary of Sales to and Purchases from ATR's Minority Shareholder and Its Affiliates (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 CNY (¥)
Related Party Transaction [Line Items]
Sales to related parties	$ 422,340		$ 390,189
ATR [Member]
Related Party Transaction [Line Items]
Purchases from related parties	7,331	¥ 51,851	6,666	¥ 44,856
Related Party [Member] | ATR [Member]
Related Party Transaction [Line Items]
Sales to related parties	$ 2,939	¥ 20,786	$ 9,934	¥ 66,849