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License rights and other intangible assets, net - The following provides information about our license rights and other intangible assets, net (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 46,038 $ 45,673
Finite-Lived Intangible Assets, Accumulated Amortization 5,377 4,551
Finite-Lived Intangible Assets, Net 40,661 41,122
Intangible Assets, Gross (Excluding Goodwill) 46,371 45,996
Intangible Assets, Net (Excluding Goodwill) 40,994 41,445
Trademarks and Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Gross (Excluding Goodwill) 333 323
Intangible Assets, Net (Excluding Goodwill) 333 323
License rights agreement [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 40,000 40,000
Finite-Lived Intangible Assets, Accumulated Amortization 4,559 3,803
Finite-Lived Intangible Assets, Net 35,441 36,197
Hormone Therapy Drug Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 4,181 4,045
Finite-Lived Intangible Assets, Accumulated Amortization 818 748
Finite-Lived Intangible Assets, Net 3,363 3,297
Hormone Therapy Drug Candidate Patents - applied and Pending [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 1,857 1,628
Finite-Lived Intangible Assets, Net $ 1,857 $ 1,628