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Note 13 - Income Taxes (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Tax Disclosure [Abstract]      
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration $ 35,280,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration    
Deferred Tax Assets, Valuation Allowance 409,000,000,000us-gaap_DeferredTaxAssetsValuationAllowance    
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount 409,000,000,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount    
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 1,500,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate 1,000,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate  
Unrecognized Tax Benefits, Interest on Income Taxes Accrued 17,500us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued 32,000us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued 2,300us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
Unrecognized Tax Benefits, Income Tax Penalties Accrued 0us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued 0us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued 0us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued
Unrecognized Tax Benefits, Interest on Income Taxes Expense $ 98,500us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense $ 81,000us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense $ 49,000us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense