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Note 8 - Fair Value Measurements (Details) (Foreign Exchange Contract [Member], USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Note 8 - Fair Value Measurements (Details) [Line Items]
Derivative, Number of Instruments Held	1us-gaap_DerivativeNumberOfInstrumentsHeld
Derivative Asset, Notional Amount	$ 6,500,000us-gaap_DerivativeAssetNotionalAmount
Other Nonoperating Income (Expense) [Member]
Note 8 - Fair Value Measurements (Details) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	700,000us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_OtherNonoperatingIncomeExpenseMember	0us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_OtherNonoperatingIncomeExpenseMember
Other Current Liabilities [Member]
Note 8 - Fair Value Measurements (Details) [Line Items]
Derivative Liability, Current	$ 134,000us-gaap_DerivativeLiabilitiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember

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Nominal or face amount used to calculate payments on the derivative asset.

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The number of derivative instruments of a particular group held by the entity.

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