Note 1 - Nature of Operations and Summary of Significant Accounting Policies: Property and Equipment: Schedule of Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Depreciation	$ 259	$ 267
Property, Plant and Equipment, Gross	11,676	11,528
Less accumulated depreciation and amortization	(7,149)	(6,890)
Property and equipment, net	4,527	4,638
Land
Property, Plant and Equipment, Gross	2,250	2,250
Building and Building Improvements
Property, Plant and Equipment, Gross	$ 3,065	3,065
Building and Building Improvements | Minimum
Property, Plant and Equipment, Useful Life	5 years
Building and Building Improvements | Maximum
Property, Plant and Equipment, Useful Life	40 years
Machinery and Equipment
Property, Plant and Equipment, Gross	$ 5,582	5,434
Machinery and Equipment | Minimum
Property, Plant and Equipment, Useful Life	3 years
Machinery and Equipment | Maximum
Property, Plant and Equipment, Useful Life	8 years
Office Equipment
Property, Plant and Equipment, Gross	$ 779	$ 779
Office Equipment | Minimum
Property, Plant and Equipment, Useful Life	3 years
Office Equipment | Maximum
Property, Plant and Equipment, Useful Life	8 years