Annual report pursuant to Section 13 and 15(d)

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

v3.20.4
Basis of Presentation and Summary of Significant Accounting Policies - Revenue from Significant Partners (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
Revenue, Major Customer                      
Total revenues $ 69,990 $ 41,848 $ 41,420 $ 33,161 $ 27,003 $ 24,808 $ 24,987 $ 43,484 $ 186,419 $ 120,282 $ 251,453
Customer Concentration Risk | Revenue | Partner A                      
Revenue, Major Customer                      
Total revenues (as a percent)                 45.00% 13.00% 40.00%
Customer Concentration Risk | Revenue | Partner B                      
Revenue, Major Customer                      
Total revenues (as a percent)                 17.00% 27.00% 13.00%
Customer Concentration Risk | Revenue | Partner C                      
Revenue, Major Customer                      
Total revenues (as a percent)                     20.00%