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Note 4 - Investments: Schedule of Available-for-sale Securities Reconciliation (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Details    
Available-for-sale Securities, Amortized Cost Basis $ 0 $ 42
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax 0 38
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 0 0
Available-for-sale Securities, Equity Securities $ 0 $ 80