Collaboration Revenue - Allocation of the transaction price to the performance obligations (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023
License and Collaboration Revenue
Contract Liability	$ 400		$ 500
Net Contract Liability	17,844	$ 17,545
Collaboration Agreement with Orion
License and Collaboration Revenue
Transaction Price	37,880	37,880
Cumulative Collaboration Revenue Recognized	24,912	24,171
Contract Liability	12,968	13,709
Less Total Contract Asset	1,836	2,912
Net Contract Liability	11,132	10,797
Collaboration Agreement with Orion | License Revenue
License and Collaboration Revenue
Transaction Price	21,660	21,660
Cumulative Collaboration Revenue Recognized	21,660	21,660
Collaboration Agreement with Orion | Development and Regulatory Services
License and Collaboration Revenue
Transaction Price	6,717	6,717
Cumulative Collaboration Revenue Recognized	3,252	2,511
Contract Liability	3,465	4,206
Collaboration Agreement with Orion | Supply of License Product
License and Collaboration Revenue
Transaction Price	9,503	9,503
Contract Liability	9,503	9,503
Collaboration Agreement with Tenacia
License and Collaboration Revenue
Transaction Price	10,000	10,000
Cumulative Collaboration Revenue Recognized	2,998	2,998
Contract Liability	7,002	7,002
Less Total Contract Asset	700	700
Net Contract Liability	6,302	6,302
Collaboration Agreement with Tenacia | License Revenue
License and Collaboration Revenue
Transaction Price	2,998	2,998
Cumulative Collaboration Revenue Recognized	2,998	2,998
Collaboration Agreement with Tenacia | Supply of License Product
License and Collaboration Revenue
Transaction Price	7,002	7,002
Contract Liability	$ 7,002	$ 7,002