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Note 12 - Revenues by Product Category: Schedule Of Revenues By Product Category (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Details |  |  |
Company Revenue Obstetrics | $ 4,532 | $ 4,587 | $ 4,669
Company Revenue Gynecology/Electrosurgery/Urology | 20,683 | 22,356 | 24,088
Company Revenue Neonatal | 6,007 | 6,299 | 6,222
Company Revenue Blood Pressure Monitoring and Accessories | $ 8,076 | $ 6,915 | $ 6,299

X
- Definition Total revenue from sales of goods and services in the Blood Pressure Monitoring and Accessories category during the period. + References No definition available. + Details
Name: | fil_CompanyRevenueBloodPressureMonitoringAndAccessories
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total revenue from sales of goods and services in the Gynecology/Electrosurgery/Urology category during the period. + References No definition available. + Details
Name: | fil_CompanyRevenueGynecologyElectrosurgeryUrology
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition Total revenue from sales of goods and services in the Obstetrics category during the period. + References No definition available. + Details
Name: | fil_CompanyRevenueObstetrics
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