CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues:
Royalties and milestones, net				$ 672
Total revenues				672
Operating expenses:
General and administrative	$ 221	$ 228	$ 821	910
Total operating expenses	221	228	821	910
Operating loss	(221)	(228)	(821)	(238)
Other income	208	2	300	6
Loss before income tax (expense) benefit	(13)	(226)	(521)	(232)
Income tax (expense) benefit	(2)		2	(2)
Net loss	(15)	(226)	(519)	(234)
Dividends on Series C preferred stock	(531)	(506)	(1,593)	(1,518)
Net loss available to common shareholders	$ (546)	$ (732)	$ (2,112)	$ (1,752)
Loss per common share
Basic	$ (0.01)	$ (0.01)	$ (0.03)	$ (0.02)
Diluted	$ (0.01)	$ (0.01)	$ (0.03)	$ (0.02)
Weighted-average number of shares - basic	74,215	74,215	74,215	74,215
Weighted-average number of shares - diluted	74,215	74,215	74,215	74,215