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Related Party Transactions - Additional Information (Detail)
1 Months Ended 3 Months Ended
Nov. 29, 2019
USD ($)
Installment
Dec. 31, 2004
USD ($)
shares
Mar. 31, 2020
USD ($)
Mar. 31, 2019
USD ($)
Related Party Transaction [Line Items]        
Percentage of royalty expense based on net sales     1.00%  
Chindex Shanghai International Trading Company Limited        
Related Party Transaction [Line Items]        
Distribution agreement term 5 years      
Distribution agreement additional term 5 years      
Number of installments | Installment 3      
Distribution fees payment     $ 0  
Chindex Shanghai International Trading Company Limited | Upfront Fees        
Related Party Transaction [Line Items]        
Distribution fees $ 3,500,000      
Chindex Shanghai International Trading Company Limited | First Installment | Upfront Fees        
Related Party Transaction [Line Items]        
Distribution fees 1,500,000      
Chindex Shanghai International Trading Company Limited | Second Installment | Upfront Fees        
Related Party Transaction [Line Items]        
Distribution fees 1,000,000      
Chindex Shanghai International Trading Company Limited | Third Installment | Upfront Fees        
Related Party Transaction [Line Items]        
Distribution fees $ 1,000,000      
Cost of Revenue        
Related Party Transaction [Line Items]        
Royalty Expense     $ 100,000 $ 200,000
University Of Florida Research Foundation | Licensing Agreements        
Related Party Transaction [Line Items]        
Common Stock granted in exchange for licensing | shares   33,652    
Percentage of royalty payment based on sale   1.00%    
Royalty payment per quarter   $ 100,000