CONDENSED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid In Capital	Accumulated Deficit
Balance at Dec. 31, 2022	$ 38,555	$ 16	$ 919,166	$ (880,627)
Balance (in shares) at Dec. 31, 2022		16,027,384
Stock-based compensation	910		910
Issuance of common stock, net of expenses	92		92
Issuance of common stock, net of expenses, (in shares)		14,420
Net loss	(10,048)			(10,048)
Balance at Mar. 31, 2023	29,509	$ 16	920,168	(890,675)
Balance (in shares) at Mar. 31, 2023		16,041,804
Balance at Dec. 31, 2023	6,307	$ 16	922,058	(915,767)
Balance (in shares) at Dec. 31, 2023		16,012,522
Stock-based compensation	172		172
Net loss	(1,682)			(1,682)
Balance at Mar. 31, 2024	$ 4,797	$ 16	$ 922,230	$ (917,449)
Balance (in shares) at Mar. 31, 2024		16,012,522