Note 3 - Major Components of Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Current:
Domestic	$ 2,506	$ 1,768		$ 1,865
Foreign	1,627	(553)	2,642	155
Total current income tax provision (benefit)	4,133	1,215	2,642	2,020
Deferred:
Domestic	8,777	1,167	9,365	3,588
Foreign	(1,414)	(2,514)	1,143	(4,301)
Total deferred income tax benefit	7,363	(1,347)	10,508	(713)
Total income tax provision (benefit)	$ 11,496	$ (132)	$ 13,150	$ 1,307