Annual report pursuant to Section 13 and 15(d)

Note 3 - Consolidated Financial Statement Details (Details Textual)

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Note 3 - Consolidated Financial Statement Details (Details Textual) - USD ($)
 12 Months Ended
Jan. 03, 2016
Dec. 28, 2014
Dec. 29, 2013
Leasehold Improvements [Member] | Assets Under Capital Lease [Member]      
Depreciation $ 2,000 $ 15,000 $ 15,000
Leasehold Improvements [Member]      
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 0 42,000  
Capital Leased Assets, Gross 0 73,000  
Machinery and Equipment [Member] | Assets Under Capital Lease [Member]      
Depreciation 417,000 694,000 769,000
Machinery and Equipment [Member]      
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 865,000 916,000  
Capital Leased Assets, Gross 2,528,000 3,495,000  
Computer Equipment [Member] | Assets Under Capital Lease [Member]      
Depreciation 49,000 151,000 144,000
Computer Equipment [Member]      
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 86,000 417,000  
Capital Leased Assets, Gross $ 119,000 498,000  
Restricted Cash, Contractual Term 1 year    
Inventory Write-down $ 673,000 475,000  
Accumulated Depreciation, Depletion and Amortization, Sale or Disposal of Property, Plant and Equipment 6,522,000    
Depreciation $ 3,967,000 $ 3,997,000 $ 3,883,000