Note 7 - Income Taxes: Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Details
Property and equipment, principally due to differences in depreciation	$ (722)	$ 845
Inventory reserves and other inventory-related temporary basis differences	696	663
Warranty, vacation, deferred rent and other liabilities	883	1,114
Retirement liabilities	1,088	2,427
Net operating loss carryforwards	62,194	63,511
Credit carryforwards	817	825
Other	1,227	944
Total deferred income tax assets	66,183	70,329
Less valuation allowance	(66,183)	(70,329)
Net deferred income tax assets	$ 0	$ 0