Note 4 - Property, Equipment and Improvements (Details) - USD ($)	Sep. 27, 2015	Dec. 31, 2014
Note 5 - Property Equipment And Improvements Details
Land	$ 123,000	$ 123,000
Buildings and leasehold improvements	7,441,000	7,437,000
Machinery and equipment	49,357,000	48,054,000
Furniture and fixtures	1,976,000	1,811,000
Computer hardware and software	4,562,000	4,452,000
Construction in progress	679,000	1,351,000
Total	64,138,000	63,228,000
Less-Accumulated depreciation	(54,947,000)	(53,416,000)
Total	$ 9,191,000	$ 9,812,000