Share-Based Compensation - Share-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation [Line Items]
Share-based compensation expense	$ 2,038	$ 2,636
Research and development
Share-based Compensation [Line Items]
Share-based compensation expense	540	776
General and administrative
Share-based Compensation [Line Items]
Share-based compensation expense	$ 1,498	$ 1,860