Note 7 - Shareholders' Equity - Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
(Loss) income from continuing operations	$ (453)			$ 182			$ (251)	$ (3,926)
Loss from discontinued operation	(43)			(386)			(72)	(7,326)
Net loss	$ (496)	$ 556	$ (383)	$ (204)	$ (9,500)	$ (1,547)	$ (323)	$ (11,252)
Weighted average common shares outstanding (basic and diluted) (in shares)	2,508			2,472			2,503	2,465
Continuing operations (in dollars per share)	$ (0.18)			$ 0.07			$ (0.1)	$ (1.59)
Discontinued operation (in dollars per share)	(0.02)			(0.16)			(0.03)	(2.97)
Basic and diluted loss per share (in dollars per share)	$ (0.2)			$ (0.09)			$ (0.13)	$ (4.56)
Service Based Awards [Member]
Unvested restricted stock (service-based) (antidilutive) (in shares)	22			24			22	24