Summary of Significant Accounting Policies - Schedule of Customers that Represent 10% or Greater of our Consolidated Total Revenue (Detail) - Revenue Benchmark [Member] - Customer Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Customer A [Member]
Product Information [Line Items]
Percentage of concentration	35.00%	32.00%	22.00%
Customer B [Member]
Product Information [Line Items]
Percentage of concentration	23.00%	24.00%	14.00%
Customer C [Member]
Product Information [Line Items]
Percentage of concentration	13.00%	13.00%	8.00%
Menarini [Member]
Product Information [Line Items]
Percentage of concentration	17.00%	10.00%	36.00%
Antengene [Member]
Product Information [Line Items]
Percentage of concentration	2.00%	9.00%	15.00%