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Accrued Warranty (Tables)
12 Months Ended
Dec. 31, 2016
Product Warranties Disclosures [Abstract]  
Accrued Warranty
Changes in the accrued warranty for fiscal years 2016 and 2015 are as follows:
 
 
Fiscal Year Ended
 
 
December 31,
2016
 
December 26,
2015
December 27,
2014
Beginning Balance
$
518,000

 
$
716,000

$
716,000

Additions
440,000

 
598,000

798,000

Claim and reversals
(440,000
)
 
(796,000
)
(798,000
)
Ending Balance
$
518,000

 
$
518,000

$
716,000