Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	May 31, 2015 CNY (¥)	Jun. 30, 2024 USD ($)	Jun. 30, 2023	Jun. 30, 2024 USD ($)	Jun. 30, 2023	Dec. 31, 2023 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents		$ 16,097		$ 16,097		$ 33,509
Long-term certificates of deposit		28,799		28,799		23,431
Short-term bank deposits		9,003		9,003
Cash and cash equivalents, short-term bank deposits and long-term certificates of deposits exceeding China DIS coverage		$ 49,400		$ 49,400		$ 49,400
Percentage of cash and cash equivalents		75.30%		75.30%
Percentage of short-term bank deposits and long-term certificates of deposit		100.00%		100.00%
Cash and cash equivalents denominated in RMB		$ 12,100		$ 12,100
Customer Concentration Risk | Sinopharm Group Co., Ltd | Revenue
Summary Of Significant Accounting Policies [Line Items]
Concentration of customer risk		49.20%	52.90%	48.20%	51.40%
Customer Concentration Risk | Sinopharm Group Co., Ltd | Accounts Receivable
Summary Of Significant Accounting Policies [Line Items]
Concentration of customer risk				45.50%		50.50%
Customer Concentration Risk | China Resources Pharmaceutical Group Ltd | Revenue
Summary Of Significant Accounting Policies [Line Items]
Concentration of customer risk		13.70%	13.20%	15.50%	13.30%
Customer Concentration Risk | Shanghai Pharmaceuticals Holding Co., Ltd | Revenue
Summary Of Significant Accounting Policies [Line Items]
Concentration of customer risk		13.10%	11.50%	12.10%	11.00%
Maximum
Summary Of Significant Accounting Policies [Line Items]
Deposits in licensed banks protected by DIS | ¥	¥ 500,000
ASU 2023-07
Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adoption date		Jan. 01, 2024		Jan. 01, 2024
Change in accounting principle, accounting standards update, adopted		true		true
Change in accounting principle, accounting standards update, immaterial effect		true		true