Note 8 - Taxes on Income (Tax Benefits) Unrecognized Tax Benefits (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 500,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	300,000	300,000	600,000
Balance at January 1,	2,936,000us-gaap_UnrecognizedTaxBenefits	3,170,000us-gaap_UnrecognizedTaxBenefits	1,050,000us-gaap_UnrecognizedTaxBenefits
Additions for tax positions of prior years related to acquisitions	36,000	30,000	111,000
Lapse in statute of limitations	(252,000)	(236,000)	(1,162,000)
Foreign currency translation	(48,000)	(28,000)	26,000
Balance at December 31,	2,672,000us-gaap_UnrecognizedTaxBenefits	2,936,000us-gaap_UnrecognizedTaxBenefits	3,170,000us-gaap_UnrecognizedTaxBenefits
Post Acquisition [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Additions for tax positions of prior years related to acquisitions	0	0	3,145,000
Expiration of Statute of Limitations [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 200,000

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

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-Name Accounting Standards Codification

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 15

-Subparagraph (c)

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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