Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating expenses:
Compensation and benefits	$ 345	$ 328	$ 762	$ 747
Professional and outside services	812	566	1,947	1,486
Property operating and maintenance	2	3	11	11
Insurance	63	43	124	86
Other operating	12	27	25	56
Total operating expenses	1,234	967	2,869	2,386
Operating income (loss)	(1,234)	(967)	(2,869)	(2,386)
Interest income	0	4	1	6
Income (loss) before income taxes	(1,234)	(963)	(2,868)	(2,380)
Income tax expense (benefit)	0	1	1	2
Net income (loss)	$ (1,234)	$ (964)	$ (2,869)	$ (2,382)
Net income (loss) per common share - basic (in dollars per share)	$ (0.03)	$ (0.02)	$ (0.07)	$ (0.06)
Weighted average common shares outstanding - basic (in shares)	40,738	40,738	40,738	40,738