Note 1 - Organization and Summary of Significant Accounting Policies (Details) - Property and Equipment - Components (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,772	$ 5,103
Accumulated depreciation	(3,627)	(3,959)
Property and equipment, net	1,145	1,144
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,989	4,324
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	194	194
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	281	277
Building [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 308	$ 308