Segment Data (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)
Segment Information
Number of reportable segments | segment	2
Net loss	$ (41,901)	$ (48,395)
Segment assets	50,763	47,452
Human Health
Segment Information
Net loss	(21,655)	(18,278)
Animal Health
Segment Information
Net loss	(20,246)	(30,117)
Product revenue, net
Segment Information
Revenue from external customers	9,761	11,956
Product revenue, net | Human Health
Segment Information
Revenue from external customers	9,588	11,741
Product revenue, net | Animal Health
Segment Information
Revenue from external customers	173	215
Operating Segments
Segment Information
Segment assets	195,479	169,505
Operating Segments | Human Health
Segment Information
Segment assets	42,289	40,898
Operating Segments | Animal Health
Segment Information
Segment assets	153,190	128,607
Segment Reconciling Items
Segment Information
Segment assets	(29,232)	(29,232)
Intersegment Eliminations
Segment Information
Segment assets	$ (115,484)	$ (92,821)