Quarterly report pursuant to Section 13 or 15(d)

Collaborative Arrangements - License Agreement (Details)

v3.20.2
Collaborative Arrangements - License Agreement (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Dec. 31, 2019
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Revenue recognized   $ 18,385 $ 21,906 $ 48,023 $ 49,808
Roche [Member]          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Revenue recognized   $ 100   $ 900  
Roche [Member] | Milestone One [Member]          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Number of days for payment 45 days        
Roche [Member] | Milestone Two [Member]          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Number of days for payment 60 days