Consolidated Statements of Operations and Comprehensive Loss (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Interest expense, related party	$ 2,392	$ 3,414
Change in fair value of convertible promissory notes, related party	0	13,196
Related party
Research and development expenses	362	2,426
General and administrative, related party	0	40
Interest expense, related party	$ 0	$ 717