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Note 9 - Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Income Tax Disclosure [Abstract]    
Income Tax Expense (Benefit) $ 682us-gaap_IncomeTaxExpenseBenefit $ 1,700us-gaap_IncomeTaxExpenseBenefit
Effective Income Tax Rate Reconciliation, Percent 38.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations 38.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations