Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating expenses:
Compensation and benefits	$ 1,506	$ 1,982
Professional and outside services	3,358	3,341
Property operating and maintenance	15	18
Insurance	261	211
Other operating	68	88
Total operating expenses	5,208	5,640
Operating income (loss)	(5,208)	(5,640)
Interest income	1	8
Income (loss) before income taxes	(5,207)	(5,632)
Income tax expense (benefit)	1	(28)
Net income (loss)	$ (5,208)	$ (5,604)
Net income (loss) per common share - basic (in dollars per share)	$ (0.13)	$ (0.14)
Weighted average common shares outstanding - basic (in shares)	40,738	40,738