Note 7 - Income Taxes: Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Details
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ 2,620	$ 2,520	$ 1,915
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	490	448	369
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount	1,129	1,010	550
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	(3)	(6)	(7)
Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of 2017 Transition Tax On Accumulated Foreign Earnings Amount	0	0	263
Tax Cuts and Jobs Act of 2017 Global Intangible Low Taxed Income Income Tax Expense	(90)	(99)	(35)
Adjustment To Deferred Tax Liability	0	391	0
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	40	9	(13)
Provision for income taxes (note 7)	$ 4,186	$ 4,273	$ 3,042