Note 5 - Income Taxes (Details) - Domestic and Foreign Components of Income (Loss) from Operations Before Income Taxes - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Note 5 - Income Taxes (Details) - Domestic and Foreign Components of Income (Loss) from Operations Before Income Taxes [Line Items]
Income (loss) from continuing operations	$ (30,658)	$ 12,584	$ (34,925)
Domestic Tax Authority [Member]
Note 5 - Income Taxes (Details) - Domestic and Foreign Components of Income (Loss) from Operations Before Income Taxes [Line Items]
Income (loss) from continuing operations	(65,895)	(1,505)	(1,681)
Foreign Tax Authority [Member]
Note 5 - Income Taxes (Details) - Domestic and Foreign Components of Income (Loss) from Operations Before Income Taxes [Line Items]
Income (loss) from continuing operations	$ 35,237	$ 14,089	$ (33,244)