Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Income (loss) from continuing operations	$ 480	$ (712)
Income (loss) from discontinued operations	14	(95)
Net income (loss)	494	(807)
Other comprehensive income (loss):
Unrealized loss on investments	(1)
Comprehensive income (loss)	$ 493	$ (807)