Note 3 - Basic Net Loss and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Numerator:
(Loss) from continuing operations	$ (2,143)	$ (3,662)
Plus loss from non-controlling interests	135
Plus loss allocated to preferred stock	122
(Loss) from continuing operations, common stock for basic earnings per share	$ (1,886)	$ (3,662)
Less gain on change in fair value of warrant liability		140
(Loss) from continuing operations, common stock for diluted earnings per share	$ (1,886)	(3,802)
Income/(loss) from discontinued operations	$ 299	$ (15)
Denominator:
Weighted-average basic common shares outstanding (in shares)	16,603	6,772
Assumed conversion of dilutive securities:
Common stock purchase warrants (in shares)		80
Denominator for dilutive earnings per share - adjusted weighted-average shares (in shares)	16,603	6,852
Basic net (loss) per share, continuing operations (in dollars per share)	$ (0.11)	$ (0.54)
Diluted net (loss) per share, continuing operations (in dollars per share)	(0.11)	(0.55)
Basic net income per share, discontinued operations (in dollars per share)	0.02	0
Diluted net income per share, discontinued operations (in dollars per share)	$ 0.02	$ 0