Note 5 - Income Taxes (Details) - Domestic and Foreign Components of Income (Loss) from Operations Before Income Taxes (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 5 - Income Taxes (Details) - Domestic and Foreign Components of Income (Loss) from Operations Before Income Taxes [Line Items]
Income (loss) from continuing operations	$ 12,584	$ (34,925)	$ 23,833
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	(1,505)	(1,681)	37,025
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	$ 14,089	$ (33,244)	$ (13,192)