Note 8 - Uncertain Tax Positions Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Balance	$ 3,786	$ 2,175	$ 2,753
Additions (reductions) for tax positions of prior years	$ (95)	1,604	(650)
Additions for tax positions of current year		$ 7	$ 72
Reductions for settlements with tax authorities	$ (575)
Reductions for lapse of statute of limitations	(2,697)
Balance	$ 419	$ 3,786	$ 2,175