Consolidated Statements of Stockholders' Equity (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
ATM [Member]
Common stock issued, transaction costs	$ 119	$ 250
Public Offering [Member]
Common stock issued, transaction costs	1,713
Yulho agreement [Member]
Common stock issued, transaction costs	$ 372