Note 7 - Income Taxes: Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Details
Deferred Tax Assets, Inventory	$ 88	$ 86	$ 84
Deferred Tax Asset, Tax Deferred Expense, Reserve and Accrual, Accounts Receivable, Allowance for Credit Loss	31	32	33
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities	58	68	55
Deferred Tax Liabilities Depreciation and Amortization	(2,925)	(3,034)	(2,933)
Deferred Tax Liabilities, Net	$ (2,748)	$ (2,848)	$ (2,761)