Note 14 - Taxes on Income - Reconciliation Between the Company's Effective Tax Rate and the U.S. Statutory Rate (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income before taxes on income		$ 2,521	$ 1,367	$ 1,303
Theoretical tax at U.S. statutory rate		529	287	274
Foreign income taxes at rates other than U.S. rate		810	(33)	369
Approved and benefited enterprises benefits	[1]	0	(154)	(239)
Technological Preferred Enterprise benefits	[2],[3]	22	0	0
Subpart F		359	568	563
Non-deductible items		306	124	217
Non-taxable items		(690)	(486)	(434)
Changes in uncertain tax position		0	(1,029)	16
Stock-based compensation expense		(666)	(3)	(62)
Deemed mandatory repatriation		0	0	3,542
Impacts of GILTI		644	967	880
Tax adjustment in respect of difference tax rate of foreign subsidiary		1,044	364	0
Changes in valuation allowance		2,487	(209)	(5,005)
Other, net		55	943	608
Taxes on income		$ 4,900	$ 1,339	$ 729
the “Approved Enterprise” and “Benefited Enterprise” status (in dollars per share)		$ 0	$ 0.01	$ 0.01
the “Technological Preferred Enterprise benefits” status (in dollars per share)		$ 0.00	$ 0	$ 0

[1] Basic and diluted earnings per share amounts of the benefit resulting from: the "Approved Enterprise" and "Benefited Enterprise" status $ 0.01 $ 0.01 $ — the "Technological Preferred Enterprise benefits" status $ — $ — $ 0.00

[2] Basic and diluted earnings per share amounts of the benefit resulting from the “Technological Preferred Enterprise benefits” status

[3] Basic and diluted earnings per share amounts of the benefit resulting from the “Technological Preferred Enterprise benefits” status.