Annual report pursuant to Section 13 and 15(d)

Intangible assets, royalties, and goodwill - Estimated future amortization of amortizable intangible assets (Details)

v3.21.1
Intangible assets, royalties, and goodwill - Estimated future amortization of amortizable intangible assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
Remaining weighted average useful life 10 years 2 months 12 days  
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2021 $ 1,526  
2022 1,526  
2023 1,526  
2024 1,526  
2025 1,526  
Thereafter 5,485  
Net Carrying Amount $ 13,115 $ 14,641