Quarterly report pursuant to Section 13 or 15(d)

11. Property and Equipment (Details)

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11. Property and Equipment (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Dec. 30, 2017
Property plant and equipment, gross $ 6,107 $ 6,093
Less accumulated depreciation and amortization (5,616) (5,555)
Property plant and equipment, net 491 538
Buildings and improvements [Member]    
Property plant and equipment, gross $ 156 156
Estimated useful life 18-30 years  
Equipment (including computer software    
Property plant and equipment, gross $ 5,922 5,908
Estimated useful life 3-15 years  
Land [Member]    
Property plant and equipment, gross $ 0 0
Projects under construction [Member]    
Property plant and equipment, gross $ 29 $ 29