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Note 10 - Geographic Long-Lived Assets Information: Schedule Of Long-Lived Assets By Geographic Area (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Details |  |  |
Long-lived assets in the United States | $ 23,327 | $ 27,605 | $ 10,309
Long-lived assets in England | 21,871 | 23,548 | 24,892
Long-lived assets in Ireland | 3,173 | 2,639 | 2,543
Long-lived assets in Australia | 440 | 423 | 447
Long-lived assets in Canada | $ 672 | $ 686 | $ 676

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- Definition Represents the monetary amount of Long-lived assets in Australia, as of the indicated date. + References No definition available. + Details
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Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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X
- Definition Represents the monetary amount of Long-lived assets in Canada, as of the indicated date. + References No definition available. + Details
Name: | fil_LongLivedAssetsInCanada
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the monetary amount of Long-lived assets in England, as of the indicated date. + References No definition available. + Details
Name: | fil_LongLivedAssetsInEngland
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the monetary amount of Long-lived assets in Ireland, as of the indicated date. + References No definition available. + Details
Name: | fil_LongLivedAssetsInIreland
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the monetary amount of Long-lived assets in the United States, as of the indicated date. + References No definition available. + Details
Name: | fil_LongLivedAssetsInTheUnitedStates
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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