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Note 3 - Investments: Available-for-sale Securities (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Details    
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses $ 8us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2  
Available-for-sale Securities, Gross Unrealized Gain (Loss) 2us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGainLoss 14us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGainLoss
Available-for-sale Securities, Income Tax Expense on Change in Unrealized Holding Gain (Loss) (1)us-gaap_AvailableForSaleSecuritiesIncomeTaxExpenseOnChangeInUnrealizedHoldingGainOrLoss (6)us-gaap_AvailableForSaleSecuritiesIncomeTaxExpenseOnChangeInUnrealizedHoldingGainOrLoss
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses $ 9us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2 $ 8us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2