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Accounts Receivable, Net (Tables)
9 Months Ended
Sep. 28, 2018
Receivables [Abstract]  
Accounts Receivable, Net
At September 28, 2018 and December 29, 2017, accounts receivable, net, was comprised of the following:
 
  
September 28,
  
December 29,
 
(In thousands)
 
2018
  
2017
 
       
Billed accounts receivable $83,939  $78,139 
Unbilled accounts receivable  42,884   35,487 
Allowance for contract losses and doubtful accounts  (3,912)  (3,526)
Total accounts receivable, net $122,911  $110,100