Note 8 - Taxes on Income (Details) - Unrecognized Tax Benefits (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Income Tax Contingency [Line Items]
Balance	$ 736,000
Reductions due to lapse of statute of limitations	(65,000)	(29,000)
Balance	625,000	736,000
Excluding Interest and Penalties [Member]
Income Tax Contingency [Line Items]
Balance	565,000	582,000
Additions based on tax positions related to the current year	59,000	68,000
Additions for tax positions of prior years	1,000	(10,000)
Reductions due to audits by taxing jurisdictions	(50,000)
Reductions due to lapse of statute of limitations	(78,000)	(75,000)
Balance	$ 497,000	$ 565,000