Statements of Operations and Comprehensive Loss (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Research and development expenses, related party	$ 370	$ 905	$ 1,800	$ 1,846
General and administrative expenses, related party	$ 0	$ 0	$ 0	$ 16