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Note 5 - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Note 5 - Supplemental Balance Sheet Information
Land	$ 123	$ 123
Buildings and leasehold improvements	7,490	7,437
Machinery and equipment	49,609	48,054
Furniture and fixtures	1,974	1,811
Computer hardware and software	4,585	4,452
Construction in progress	745	1,351
Total	64,526	63,228
Less-Accumulated depreciation	(55,488)	(53,416)
Total	$ 9,038	$ 9,812

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