Note 10 - Income (Loss) before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Domestic	$ 71,323	$ 37,211	$ 23,068
International	18,242	8,295	21,939
Income before income taxes	$ 89,565	$ 45,506	$ 45,007