Note 7 - Taxes on Income (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Other Noncurrent Liabilities [Member]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 500,000	$ 580,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	27,000	28,000
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	44,000	38,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	101,000	118,000
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	(59,000)
Undistributed Earnings of Foreign Subsidiaries	$ 12,236,000	$ 9,107,000