Annual report pursuant to Section 13 and 15(d)

Basis of Presentation and Summary of Significant Accounting Policies - Royalty Revenue (Details)

v3.20.4
Basis of Presentation and Summary of Significant Accounting Policies - Royalty Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disaggregation of Revenue [Line Items]                      
Total revenues $ 69,990 $ 41,848 $ 41,420 $ 33,161 $ 27,003 $ 24,808 $ 24,987 $ 43,484 $ 186,419 $ 120,282 $ 251,453
Royalties                      
Disaggregation of Revenue [Line Items]                      
Total revenues                 33,796 46,976 128,556
Royalty, Kyprolis                      
Disaggregation of Revenue [Line Items]                      
Total revenues                 25,164 25,046 21,686
Royalty, Evomela                      
Disaggregation of Revenue [Line Items]                      
Total revenues                 6,377 5,171 5,658
Royalty, Other                      
Disaggregation of Revenue [Line Items]                      
Total revenues                 $ 2,255 2,566 1,952
Royalty, Promacta                      
Disaggregation of Revenue [Line Items]                      
Total revenues                   $ 14,193 $ 99,260