Note 7 - Income Taxes: Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Details
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ 2,520	$ 1,915	$ 2,512
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	448	369	(124)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount	1,010	550	985
Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Amount	(6)	(7)	(9)
Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of 2017 Transition Tax On Accumulated Foreign Earnings Amount	0	263	(266)
Tax Cuts and Jobs Act of 2017 Global Intangible Low Taxed Income Income Tax Expense	(99)	(35)	59
Adjustment To Deferred Tax Liability	391	0	0
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	9	(13)	0
Provision for income taxes (note 7)	$ 4,273	$ 3,042	$ 3,157