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Note 9 - Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 9 - Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Unrecognized Tax Benefits	$ 117,000us-gaap_UnrecognizedTaxBenefits	$ 117,000us-gaap_UnrecognizedTaxBenefits	$ 382,000us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	0us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Scenario, Forecast [Member]
Note 9 - Income Taxes (Details) [Line Items]
Unrecognized Tax Benefits, Period Increase (Decrease)	$ 100,000us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319



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-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319

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

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854



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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.

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-Publisher FASB

-Name Accounting Standards Codification

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The net amount of all increases and decreases in unrecognized tax benefits for the period.

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