Apexian Sublicense Agreement (Details) - Apexian Sublicense Agreement [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2020
Sublicense Agreement [Abstract]
Common stock issued (in shares)		891,422
Development and Regulatory Milestones [Member] | Maximum [Member]
Sublicense Agreement [Abstract]
Milestone payments	$ 11
Sales Milestones [Member] | Maximum [Member]
Sublicense Agreement [Abstract]
Milestone payments	$ 20