Note 9 - Geographic Information: Schedule Of Geographic Information (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Details
Company Sales in the United States	$ 25,866	$ 27,493	$ 21,192
Company Sales in Europe	6,399	8,906	9,160
Company Sales Other	$ 9,913	$ 10,505	$ 11,646

Represents the monetary amount of Company Sales in the United States, during the indicated time period.

No definition available.

Name:	fil_CompanySalesInTheUnitedStates
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration