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Accrued Warranty (Tables)
12 Months Ended
Dec. 29, 2018
Product Warranties Disclosures [Abstract]  
Accrued Warranty Changes in the accrued warranty for fiscal years ended 2018, 2017 and 2016 are as follows:
 
Fiscal Year Ended
 
December 29,
2018
 
December 30,
2017
 
December 31,
2016
Beginning balance
$
649,000

 
$
518,000

 
$
518,000

Additions
159,000

 
328,000

 
440,000

Claim and reversals
(237,000
)
 
(197,000
)
 
(440,000
)
Ending Balance
$
571,000

 
$
649,000

 
$
518,000