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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, 2016
Dec. 31, 2015
Property, Plant and Equipment, Gross $ 11,528 $ 11,358
Less accumulated depreciation and amortization (6,890) (6,623)
Net property and equipment 4,638 4,735
Land    
Property, Plant and Equipment, Gross 2,250 2,250
Building and Building Improvements    
Property, Plant and Equipment, Gross $ 3,065 3,028
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 $ 5,434 5,301
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