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Note 10 - Geographic Information: Schedule Of Geographic Information (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Details |  |  |
Company Sales in the United States | $ 19,488 | $ 20,364 | $ 19,483
Company Sales in Europe | 7,989 | 7,720 | 8,939
Company Sales Other | $ 11,821 | $ 12,073 | $ 12,856

X
- Definition Total revenue from sales of goods and services to customers in Europe during the period. + References No definition available. + Details
Name: | fil_CompanySalesInEurope
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total revenue from sales of goods and services to customers in the United States during the period. + References No definition available. + Details
Name: | fil_CompanySalesInTheUnitedStates
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total revenue from sales of goods and services to customers outside of the United States and Europe during the period. + References No definition available. + Details
Name: | fil_CompanySalesOther
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TextBlockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration