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Note 4 - Accounts Receivable (Tables)
12 Months Ended
Jan. 02, 2016
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
   
January 2,
2016
   
January 3,
2015
 
Billed
  $ 40,117     $ 47,318  
Accrued and unbilled
    4,939       4,853  
Work-in-progress
    7,322       8,027  
Allowance for sales discounts and doubtful accounts
    (1,432
)
    (1,011
)
                 
Accounts receivable, net
  $ 50,946     $ 59,187