Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating expenses:
Compensation and benefits	$ 347	$ 340	$ 732	$ 747
Professional and outside services	813	556	1,541	1,119
Property operating and maintenance	2	6	10	15
Insurance	57	67	115	134
Other operating	28	14	41	25
Total operating expenses	1,247	983	2,439	2,040
Operating income (loss)	(1,247)	(983)	(2,439)	(2,040)
Interest income	0	1	1	1
Interest expense	22	0	51	0
Income (loss) before income taxes	(1,269)	(982)	(2,489)	(2,039)
Income tax expense (benefit)	0	1	0	1
Net income (loss)	$ (1,269)	$ (983)	$ (2,489)	$ (2,040)
Net income (loss) per common share - basic (in dollars per share)	$ (0.03)	$ (0.02)	$ (0.06)	$ (0.05)
Weighted average common shares outstanding - basic (in shares)	40,738	40,738	40,738	40,738