Note 8 - Income Taxes: Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current
Deferred Tax Assets, Inventory	$ 98	$ 78
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	25	26
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities	147	121
Deferred Tax Assets, Other	18	30
Unrealized investment loss	105	108
Deferred Tax Assets, Net	393	363
Long-Term
Deferred Tax Assets, Other	(41)	(49)
Deferred Tax Liabilities Depreciation and Amortization	(4,277)	(5,412)
Deferred Tax Assets, Net	$ (4,318)	$ (5,461)