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Note 5 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($)
$ in Thousands
Sep. 29, 2018
Dec. 30, 2017
Property and equipment $ 8,426 $ 8,009
Less: accumulated depreciation and amortization 4,732 4,563
Property and equipment, net 3,694 3,446
Computers and Systems [Member]    
Property and equipment 7,133 6,172
Equipment and Furniture [Member]    
Property and equipment 600 938
Leasehold Improvements [Member]    
Property and equipment $ 693 $ 899