CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Revenues	$ 98	$ 99
Operating expenses:
Research and development	3,708	2,734
General and Administrative Expense	3,770	3,240
Total operating expenses	7,478	5,974
Operating loss	(7,380)	(5,875)
Other income, net	1,139	263
Loss from continuing operations before income taxes	(6,241)	(5,612)
Income tax expense	0	0
Loss from continuing operations	(6,241)	(5,612)
Loss from discontinued operations, net of income taxes	(8)	(10)
Net loss	$ (6,249)	$ (5,622)
Loss per share from continuing operations, basic (in dollars per share)	$ (0.15)	$ (1.74)
Loss per share from continuing operations, diluted (in dollars per share)	(0.15)	(1.74)
Loss per share from discontinued operations, basic (in dollars per share)	(0.00)	(0.00)
Loss per share from discontinued operations, diluted (in dollars per share)	(0.00)	(0.00)
Loss per share, basic (in dollars per share)	(0.15)	(1.74)
Loss per share, diluted (in dollars per share)	$ (0.15)	$ (1.74)
Weighted average shares outstanding - basic (in shares)	42,581	3,255
Weighted average shares outstanding - diluted (in shares)	42,581	3,255
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized loss on marketable securities, net of tax of $0	$ (96)	$ 0
Total other comprehensive loss	(96)	0
Comprehensive loss	$ (6,345)	$ (5,622)