License rights and other intangible assets, net - Summary of Information about License Rights and Other Intangible Assets, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 46,085	$ 45,674
Finite-Lived Intangible Assets, Accumulated Amortization	6,214	4,552
Finite-Lived Intangible Assets, Net	39,871	41,122
License Rights and Other Intangible Assets, Net, Gross Carrying Amount (Excluding Goodwill)	46,420	45,997
License rights and other intangible assets, net	40,206	41,445
Trademarks/trade name rights [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets, Gross Carrying Amount and Net	335	323
License rights agreement [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross Carrying Amount	40,000	40,000
Finite-Lived Intangible Assets, Accumulated Amortization	5,313	3,803
Finite-Lived Intangible Assets, Net	34,687	36,197
Hormone therapy drug patents [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross Carrying Amount	4,689	4,045
Finite-Lived Intangible Assets, Accumulated Amortization	901	749
Finite-Lived Intangible Assets, Net	3,788	3,296
Hormone therapy drug candidate patents - applied and pending [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross Carrying Amount	1,396	1,629
Finite-Lived Intangible Assets, Net	$ 1,396	$ 1,629