Note 1 - Nature of Operations and Summary of Significant Accounting Policies: Inventories (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Text Block [Abstract]
Provision for excess and obsolete inventory	$ 427	$ 105

Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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