Note 5 - Property, Equipment and Improvements (Details) - USD ($)	Jun. 28, 2015	Dec. 31, 2014
Note 5 - Property Equipment And Improvements Details
Land	$ 123,000	$ 123,000
Buildings and leasehold improvements	7,475,000	7,437,000
Machinery and equipment	48,395,000	48,054,000
Furniture and fixtures	1,993,000	1,811,000
Computer hardware and software	4,525,000	4,452,000
Construction in progress	1,390,000	1,351,000
Total	63,901,000	63,228,000
Less-Accumulated depreciation	(54,400,000)	(53,416,000)
Total	$ 9,501,000	$ 9,812,000

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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