Quarterly report pursuant to Section 13 or 15(d)

Licensing and Other Arrangements - Sale of Future Revenue Streams (Details)

v3.21.1
Licensing and Other Arrangements - Sale of Future Revenue Streams (Details)
$ in Thousands
3 Months Ended
Dec. 21, 2016
USD ($)
agreement
period
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
Licensing and other arrangements        
Unearned revenue recognized under units-of-revenue method   $ (356) $ (304)  
Revenue recognized under units-of-revenue method   356 304  
Unearned revenue recognized under units-of-revenue method, current   1,482   $ 1,452
Unearned revenue recognized under units-of-revenue method, noncurrent   13,130   $ 13,516
HealthCare Royalty Partners II, L.P        
Licensing and other arrangements        
Revenue recognized under units-of-revenue method   400    
Unearned revenue recognized under units-of-revenue method, current   1,500    
Unearned revenue recognized under units-of-revenue method, noncurrent   $ 13,100    
HealthCare Royalty Partners II, L.P | Royalty Sale Agreements        
Licensing and other arrangements        
Number of agreements | agreement 2      
Unearned revenue recognized under units-of-revenue method $ 18,000      
Revenue recognized under units-of-revenue method     $ 300  
HealthCare Royalty Partners II, L.P | First Royalty Sale Agreement        
Licensing and other arrangements        
Cash payment received 6,500      
Eligible potential additional payments receivable upon achievement of specified net sales milestones in future years $ 4,000      
Number of milestone periods | period 3      
HealthCare Royalty Partners II, L.P | Second Royalty Sale Agreement        
Licensing and other arrangements        
Cash payment received $ 11,500