Licensed rights and other intangible assets - Summary of Information about License Rights and Other Intangible Assets, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 8,160	$ 8,220
Finite-Lived Intangible Assets, Accumulated Amortization	1,824	1,598
Finite-Lived Intangible Assets, Net	6,336	6,622
Intangible assets, net, Gross Carrying Amount (Excluding Goodwill)	8,481	8,541
License rights and other intangible assets, net	6,657	6,943
Hormone therapy drug patents [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross Carrying Amount	6,224	6,225
Finite-Lived Intangible Assets, Accumulated Amortization	1,824	1,598
Finite-Lived Intangible Assets, Net	4,400	4,627
Hormone therapy drug candidate patents applied and pending [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross Carrying Amount	1,936	1,995
Finite-Lived Intangible Assets, Net	1,936	1,995
Trademarks/trade name rights [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets, Gross Carrying Amount and Net	$ 321	$ 321