Quarterly report pursuant to Section 13 or 15(d)

Segment, Geographical and Other Revenue Information - Additional Information (Details)

v3.19.3
Segment, Geographical and Other Revenue Information - Additional Information (Details)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Dec. 31, 2018
USD ($)
Mar. 31, 2019
USD ($)
Sep. 30, 2019
segment
Segment Reporting Information [Line Items]      
Number of operating segments | segment     2
CDX-6114 [Member] | Nestec Ltd. (Nestle Health Sciences) [Member] | Collaborative Arrangement [Member]      
Segment Reporting Information [Line Items]      
Milestone payment amount $ 1.0    
Duration to pay after milestone achievement 60 days    
Event of counterparty exercising alternative option   $ 3.0