Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating expenses:
Compensation and benefits	$ 417	$ 419
Professional and outside services	1,135	920
Property operating and maintenance	9	8
Insurance	61	43
Other operating	13	29
Total operating expenses	1,635	1,419
Operating income (loss)	(1,635)	(1,419)
Interest income	1	2
Income (loss) before income taxes	(1,634)	(1,417)
Income tax expense (benefit)	1	1
Net income (loss)	$ (1,635)	$ (1,418)
Net income (loss) per common share - basic (in dollars per share)	$ (0.04)	$ (0.03)
Weighted average common shares outstanding - basic (in shares)	40,738	40,738