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

Represents the monetary amount of Long-lived assets in Australia, as of the indicated date.

No definition available.

Name:	fil_LongLivedAssetsInAustralia
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the monetary amount of Long-lived assets in Canada, as of the indicated date.

No definition available.

Name:	fil_LongLivedAssetsInCanada
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the monetary amount of Long-lived assets in England, as of the indicated date.

No definition available.

Name:	fil_LongLivedAssetsInEngland
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the monetary amount of Long-lived assets in Ireland, as of the indicated date.

No definition available.

Name:	fil_LongLivedAssetsInIreland
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the monetary amount of Long-lived assets in the United States, as of the indicated date.

No definition available.

Name:	fil_LongLivedAssetsInTheUnitedStates
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

No definition available.