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Related-Party Transactions - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended
Oct. 31, 2017
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Related Party Transaction [Line Items]        
Service revenue   $ 3,202,825 $ 4,158,652  
Accounts receivable   3,349,850   $ 5,012,678
Research and development   2,074,748 2,589,286  
Profit sharing payments in collaborative development services revenue   2,045,527 1,137,063  
Collaborative Development Services        
Related Party Transaction [Line Items]        
Service revenue   540,320 2,425,106  
SOW One        
Related Party Transaction [Line Items]        
Service revenue   0 1,318,718  
Accounts receivable   0 1,298,079  
Research and development   0 1,046,121  
SOW Two        
Related Party Transaction [Line Items]        
Accounts receivable   257,699   1,007,950
Research and development   209,029 343,266  
SOW Two | Collaborative Development Services        
Related Party Transaction [Line Items]        
Service revenue   257,699 610,991  
SOW Three        
Related Party Transaction [Line Items]        
Accounts receivable   131,836   $ 363,869
Research and development   218,575 226,855  
Profit sharing payments in collaborative development services revenue     146,491  
SOW Three | Collaborative Development Services        
Related Party Transaction [Line Items]        
Service revenue   $ 282,621 $ 348,906  
QIAGEN Manchester Limited        
Related Party Transaction [Line Items]        
Agreement commencement period   2016-11    
QIAGEN Manchester Limited | Maximum        
Related Party Transaction [Line Items]        
Term of agreement   1 year    
QIAGEN North American Holdings, Inc. | Convertible Promissory Note        
Related Party Transaction [Line Items]        
Cash proceeds from issuance of subordinated notes $ 3,000,000