CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues:
Royalties and milestones, net	$ 0	$ 0
Total revenues	0	0
Operating expenses:
General and administrative	326	285
Total operating expenses	326	285
Operating loss	(326)	(285)
Interest and dividend income	647	447
Income before income tax benefit	321	162
Income tax (expense) benefit	(1)	35
Net income	320	197
Dividends on Series C preferred stock	(531)	(531)
Net loss available to common shareholders	$ (211)	$ (334)
Loss per common share
Basic	$ 0.00	$ 0.00
Diluted	$ 0.00	$ 0.00
Weighted average number of common shares - basic	74,215	74,215
Weighted average number of common shares - diluted	74,215	74,215