Related Parties - Additional Information (Detail) ¥ in Thousands, $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2024 CNY (¥)	Sep. 30, 2023 USD ($)	Sep. 30, 2023 CNY (¥)	Sep. 30, 2024 USD ($)	Sep. 30, 2024 CNY (¥)	Sep. 30, 2023 USD ($)	Sep. 30, 2023 CNY (¥)	Feb. 20, 2024	Feb. 16, 2024	Dec. 31, 2023 USD ($)
Related Party Transaction [Line Items]
Trade receivable	$ 74,727				$ 74,727						$ 78,939
Subsidiary [Member] | Crawford Group [Member]
Related Party Transaction [Line Items]
Trade receivable											$ 722
Schedule 13D filed date									Feb. 20, 2024
Ceased date of beneficial stock ownership										Feb. 16, 2024
Minimum [Member] | Subsidiary [Member] | Crawford Group [Member]
Related Party Transaction [Line Items]
Beneficial stock ownership percentage											5.00%
Ceased beneficially stock ownership percentage										5.00%
ATR [Member]
Related Party Transaction [Line Items]
Effective interest rate	4.35%	4.35%	4.35%	4.35%	4.35%	4.35%	4.35%	4.35%
Interest paid					$ 2	¥ 17	$ 5	¥ 35
Accrued interest	$ 0				$ 0						$ 0
Land lease commenced year					2007	2007
Land lease expiry year					2054	2054
Rent paid	$ 34	¥ 223	$ 34	¥ 223	$ 95	¥ 669	$ 95	¥ 669
ATR [Member] | Minimum [Member]
Related Party Transaction [Line Items]
Interest accrual period	3 years	3 years	3 years	3 years	3 years	3 years	3 years	3 years
ATR [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Interest accrual period	5 years	5 years	5 years	5 years	5 years	5 years	5 years	5 years