Note 10 - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 2,577	$ 2,572	$ 630
State			15
International	$ 10,076	$ 512	5,980
Subtotal	12,653	3,084	6,625
Deferred:
Federal	22,005	(14,965)	7,014
International	(2,269)	(746)	1,093
Subtotal	19,736	(15,711)	8,107
Total	$ 32,389	$ (12,627)	$ 14,732