Note 7 - Taxes on Income (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Note 7 - Taxes on Income (Details) [Line Items]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 28,000	$ 45,000
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	38,000	65,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest, Payments		23,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	118,000	128,000
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	(137,000)
Undistributed Earnings of Foreign Subsidiaries	9,107,000	7,266,000
Other Noncurrent Liabilities [Member]
Note 7 - Taxes on Income (Details) [Line Items]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 580,000	$ 625,000