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Summary of Significant Accounting Policies - Additional Information (Detail)
$ in Thousands
 1 Months Ended 3 Months Ended
May 31, 2015
CNY (¥)
Mar. 31, 2024
USD ($)
Mar. 31, 2023
Dec. 31, 2023
USD ($)
Summary Of Significant Accounting Policies [Line Items]        
Cash and cash equivalents   $ 29,785   $ 33,509
Long-term certificates of deposit   23,106   $ 23,431
Short-term bank deposits   $ 7,567    
Percentage of cash and cash equivalents   83.00%    
Percentage of short-term bank deposits and long-term certificates of deposit   100.00%    
Cash and cash equivalents denominated in RMB   $ 24,700    
Customer Concentration Risk | Sinopharm Group Co., Ltd | Revenue        
Summary Of Significant Accounting Policies [Line Items]        
Concentration of customer risk   47.30% 49.40%  
Customer Concentration Risk | Sinopharm Group Co., Ltd | Accounts Receivable        
Summary Of Significant Accounting Policies [Line Items]        
Concentration of customer risk   45.40% 48.70%  
Customer Concentration Risk | China Resources Pharmaceutical Group Ltd | Revenue        
Summary Of Significant Accounting Policies [Line Items]        
Concentration of customer risk   17.20% 10.40%  
Customer Concentration Risk | Shanghai Pharmaceuticals Holding Co., Ltd | Revenue        
Summary Of Significant Accounting Policies [Line Items]        
Concentration of customer risk   11.10% 13.50%  
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    
Change in accounting principle, accounting standards update, adopted   true    
Change in accounting principle, accounting standards update, immaterial effect   true