Note 15 - Taxes On Income (Details) - Uncertain Tax Positions - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Uncertain Tax Positions [Abstract]
Gross unrecognized tax benefits at January 1	$ 1,031	$ 1,892
Increases in tax positions for previous years	177	115
Increases in tax positions for current year	533	71
Change in interest and linkage related to tax positions	(30)	(85)
Lapse in statute of limitations or finalization of tax assessment		(858)	$ (284)
Gross unrecognized tax benefits at December 31	$ 1,711	$ 1,031	$ 1,892