Quarterly report pursuant to Section 13 or 15(d)

5. Product Warranty (Tables)

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5. Product Warranty (Tables)
6 Months Ended
Jul. 02, 2016
Guarantees [Abstract]  
Schedule of warranty accrual
    Three Months Ended     Six Months Ended  
      July 2, 2016       July 4, 2015       July 2, 2016       July 4, 2015  
Beginning Balance   $ 39     $ 28     $ 42     $ 30  
Standard accrual based on units sold     3       13       9       19  
Actual costs incurred     (5 )     (4 )     (8 )     (8 )
Periodic accrual adjustments     (4 )     (4 )     (10 )     (8 )
Ending Balance   $ 33     $ 33     $ 33     $ 33