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Note 4 - Accounts Receivable (Tables)
9 Months Ended
Sep. 29, 2012
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
   
September 29,
2012
   
December 31,
2011
 
Billed
  $ 24,392     $ 28,460  
Accrued and unbilled
    3,821       3,143  
Work-in-progress
    11,270       8,883  
Allowance for doubtful accounts and sales discounts
    (1,534 )     (1,455 )
                 
Accounts receivable, net
  $ 37,949     $ 39,031