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Summary of Significant Accounting Policies - Additional Information (Detail)
 1 Months Ended 12 Months Ended
May 31, 2015
CNY (¥)
Dec. 31, 2023
USD ($)
Segment
Dec. 31, 2022
USD ($)
Summary Of Significant Accounting Policies [Line Items]      
Number of operating segment | Segment   2  
Number of reportable segment | Segment   2  
Allowance for credit losses certificates of deposit   $ 0 $ 0
Cash   33,500,000 25,200,000
Long-term certificates of deposit   23,431,000 7,394,000
Impairment of long-lived assets   0 0
Deferred revenue   39,000 145,000
Foreign currency translation loss   1,484,000 4,928,000
Cash   26,500,000  
Contract assets   $ 0 $ 0
Customer Concentration Risk | Sinopharm Group Co., Ltd. | Revenue      
Summary Of Significant Accounting Policies [Line Items]      
Concentration of customer risk   50.10% 47.70%
Customer Concentration Risk | Sinopharm Group Co., Ltd. | Accounts Receivable      
Summary Of Significant Accounting Policies [Line Items]      
Concentration of customer risk   50.50% 45.10%
Customer Concentration Risk | China Resources Pharmaceutical Group Ltd | Revenue      
Summary Of Significant Accounting Policies [Line Items]      
Concentration of customer risk   13.70% 10.80%
Customer Concentration Risk | Shanghai Pharmaceuticals Holding Co., Ltd | Revenue      
Summary Of Significant Accounting Policies [Line Items]      
Concentration of customer risk   11.20% 11.60%
Maximum      
Summary Of Significant Accounting Policies [Line Items]      
Deposits in licensed banks protected by DIS | ¥ ¥ 500,000    
Patents and Technological Know How [Member] | Minimum      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful life of finite lived intangible assets   10 years  
Patents and Technological Know How [Member] | Maximum      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful life of finite lived intangible assets   20 years  
Computer Software | Minimum      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful life of finite lived intangible assets   2 years  
Computer Software | Maximum      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful life of finite lived intangible assets   3 years  
ASU 2021-04      
Summary Of Significant Accounting Policies [Line Items]      
Change in accounting principle, accounting standards update, adoption date   Jan. 01, 2022  
Change in accounting principle, accounting standards update, adopted   true  
Change in accounting principle, accounting standards update, immaterial effect   true  
ASU 2020-06      
Summary Of Significant Accounting Policies [Line Items]      
Change in accounting principle, accounting standards update, adoption date   Jan. 01, 2022  
Change in accounting principle, accounting standards update, adopted   true  
Change in accounting principle, accounting standards update, immaterial effect   true  
ASU 2021-08      
Summary Of Significant Accounting Policies [Line Items]      
Change in accounting principle, accounting standards update, adoption date   Jan. 01, 2023  
Change in accounting principle, accounting standards update, adopted   true  
Change in accounting principle, accounting standards update, immaterial effect   true  
ASU 2021-10      
Summary Of Significant Accounting Policies [Line Items]      
Change in accounting principle, accounting standards update, adoption date   Jan. 01, 2022  
Change in accounting principle, accounting standards update, adopted   true  
Change in accounting principle, accounting standards update, immaterial effect   true