Segment Data (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) segment	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Information
Number of reportable segments | segment			2
Net loss	$ (12,291)	$ (9,390)	$ (24,688)	$ (27,554)
Segment assets	52,172		52,172		$ 47,452
Human Health
Segment Information
Net loss	(4,576)	372	(11,115)	(9,596)
Animal Health
Segment Information
Net loss	(7,715)	(9,762)	(13,573)	(17,958)
Product revenue
Segment Information
Revenue from external customers	2,676	2,921	4,648	5,546
Product revenue | Human Health
Segment Information
Revenue from external customers	2,627	2,819	4,553	5,380
Product revenue | Animal Health
Segment Information
Revenue from external customers	49	$ 102	95	$ 166
Operating Segments
Segment Information
Segment assets	185,971		185,971		169,505
Operating Segments | Human Health
Segment Information
Segment assets	40,819		40,819		40,898
Operating Segments | Animal Health
Segment Information
Segment assets	145,152		145,152		128,607
Segment Reconciling Items
Segment Information
Segment assets	(29,232)		(29,232)		(29,232)
Intersegment Eliminations
Segment Information
Segment assets	$ (104,567)		$ (104,567)		$ (92,821)