Note 12 - Income Taxes (Details) - Components of Income Tax Benefit - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 1,284	$ 16,081	$ 5,145
State	348	2,131	1,340
Foreign	7,999	5,769	6,180
	9,631	23,981	12,665
Deferred:
Federal	(1,998)	(13,175)	(10,026)
State	318	(1,291)	(2,156)
Foreign	(5,347)	(5,080)	(5,839)
	(7,027)	(19,546)	(18,021)
Income tax expense (benefit)	$ 2,604	$ 4,435	$ (5,356)