Segment Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Segment Information
Number of reportable segments | segment	2
Total revenue	$ 31,249	$ 29,752	$ 6,761
Cost of revenue	3,404	4,023	4,713
Research and development	96,182	77,813	43,813
General and administrative	31,501	25,133	23,619
Licensing	14,658	7,937
Revaluation of contingent consideration	(26,900)	4,700	24,339
Intangible asset impairment	6,629
Restructuring expense	3,132
Loss from operations	(97,357)	(89,854)	(89,723)
Dermatology Therapeutics Segment
Segment Information
Total revenue	28,214	25,356	932
Contract Research Segment
Segment Information
Total revenue	3,035	4,396	5,829
Operating Segments | Dermatology Therapeutics Segment
Segment Information
Research and development	97,188	78,599	44,259
Licensing	14,658	7,937
Revaluation of contingent consideration	(26,900)	4,700	24,339
Intangible asset impairment	6,629
Restructuring expense	2,202
Loss from operations	(65,563)	(65,880)	(67,666)
Operating Segments | Contract Research Segment
Segment Information
Total revenue	16,543	12,609	7,618
Cost of revenue	18,941	15,847	11,885
General and administrative	4,561	3,505	3,047
Restructuring expense	19
Loss from operations	(3,943)	(2,347)	(1,485)
Corporate and Other
Segment Information
Total revenue	(16,543)	(12,609)	(7,618)
Cost of revenue	(15,537)	(11,824)	(7,172)
Research and development	(1,006)	(786)	(446)
General and administrative	26,940	21,628	20,572
Restructuring expense	911
Loss from operations	$ (27,851)	$ (21,627)	$ (20,572)