Note 8 - Taxes on Income (Detail) (USD $)	24 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Unrecognized Tax Benefits	$ 736,000	$ 735,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	46,000	41,000
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	29,000	44,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	171,000	153,000
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	(53,000)
Undistributed Earnings of Foreign Subsidiaries	$ 5,578,000	$ 4,141,000

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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This element represents the total of interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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