Note 8 - Income Taxes: Schedule of Deferred Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred income tax assets:
Property and equipment, principally due to differences in depreciation	$ 966	$ 840
Inventory reserves and other inventory-related temporary basis differences	603	500
Warranty, vacation, deferred rent and other liabilities	858	849
Retirement liabilities	2,255	1,488
Net operating loss carryforwards	63,529	66,050
Credit carryforwards	825	1,428
Other	961	965
Total deferred income tax assets	69,997	72,120
Less valuation allowance	(69,997)	(72,120)
Deferred income tax liabilities:
Total deferred income tax liabilities
Net deferred income tax assets and liabilities