Annual report pursuant to Section 13 and 15(d)

Note 3 - Consolidated Financial Statement Details (Detail)

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Note 3 - Consolidated Financial Statement Details (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 30, 2012
Jan. 01, 2012
Jan. 02, 2011
Depreciation $ 3,158 $ 2,794 $ 2,549
Machinery and Equipment [Member] | Assets Under Capital Lease [Member]
      
Depreciation 598 627 960
Machinery and Equipment [Member] | Formerly Held Under Capital Lease [Member]
      
Property, Plant and Equipment, Transfers and Changes 1,004    
Accumulated Depreciation, Depletion and Amortization, Property, Plant and Equipment, Period Increase (Decrease) 660    
Machinery and Equipment [Member]
      
Capital Leased Assets, Gross 5,114 5,569  
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 1,038 1,088  
Leasehold Improvements [Member]
      
Capital Leased Assets, Gross 73    
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 12    
Depreciation 12    
Computer Hardware and Software [Member]
      
Capital Leased Assets, Gross 400    
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 122    
Depreciation $ 122 $ 43 $ 88