Note 9 - Income Taxes - Income Tax Provisions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Federal	$ 191	$ (15)
State	(14)	529	51
Foreign - Other	578	1,062	164
Total current	755	1,576	215
Federal	937	8,168	(3,015)
State	(1,161)	242	(426)
Foreign - Other	85	16	26
Total deferred	(139)	8,426	(3,415)
Income tax expense (benefit)	$ 616	$ 10,002	$ (3,200)