Note 15 - Loss From Continuing Operations Per Share - Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
(Loss) income from continuing operations		$ (226)	$ (1,124)	$ 417	$ (2,944)
Less: net income attributable to noncontrolling interests		(782)	(112)	(1,469)	(941)
Less: dividends on preferred stock		(86)	(230)	(409)	(831)
Loss from continuing operations attributable to common shareholders		$ (1,094)	$ (1,466)	$ (1,461)	$ (4,716)
Basic: (in shares)		22,732	22,211	22,440	22,164
Warrants (in shares)	[1]	0	0	0	0
Convertible preferred stock (in shares)	[1]	0	0	0	0
Total weighted average diluted shares (in shares)		22,732	22,211	22,440	22,164
Loss per share – continuing operations: Basic: (in dollars per share)		$ (0.05)	$ (0.07)	$ (0.07)	$ (0.21)
Loss per share – continuing operations: Diluted: (in dollars per share)		$ (0.05)	$ (0.07)	$ (0.07)	$ (0.21)
Restricted Stock [Member]
Unvested restricted stock awards (in shares)	[1]	0	0	0	0

[1] Potentially dilutive securities consist of stock options, unvested restricted stock awards, warrants and convertible preferred stock. Because the Company is reporting a loss from continuing operations attributable to common shareholders for the three and nine months ended September 30, 2021 and September 30, 2020, all potentially dilutive securities outstanding were excluded from the calculation of diluted loss from continuing operations per share since their inclusion would have been anti-dilutive.