Note 4 - Discontinued Operations - Results Included in Loss From Discontinued Operations, Net of Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Revenue, net	$ 1,644	$ 134,850
(Loss) income from discontinued operations	(886)	10,341
Gain on sale of assets	1,326	21,634
Income from discontinued operations, before tax	440	31,975
Income tax expense	362	12,261
Income from discontinued operations, net of tax	$ 78	$ 19,714