Note 12 - Taxes on Income - Provisions for Taxes on Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Federal	$ (2,775)	$ (4,765)	$ 3,764
Foreign	5,705	6,025	7,512
State	460	(651)	3,351
Subtotal	3,390	609	14,627
Federal	538	947	(8,706)
Foreign	(199)	(1,531)	(1,099)
State	2,835	(157)	183
Subtotal	3,174	(741)	(9,622)
Total tax provision	$ 6,564	$ (132)	$ 5,005