Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating expenses:
Compensation and benefits	$ 1,982	$ 2,843
Professional and outside services	3,341	1,851
Property operating and maintenance	18	16
Insurance	211	182
Other operating	88	99
Total operating expenses	5,640	4,991
Operating income (loss)	(5,640)	(4,991)
Interest income	8	36
Income (loss) before income taxes	(5,632)	(4,955)
Income tax expense (benefit)	(28)	(29)
Net income (loss)	$ (5,604)	$ (4,926)
Net income (loss) per common share - basic (in dollars per share)	$ (0.14)	$ (0.12)
Weighted average common shares outstanding - basic (in shares)	40,738	40,738