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Accrued Warranty (Tables)
12 Months Ended
Dec. 26, 2020
Guarantees and Product Warranties [Abstract]  
Schedule of Accrued Warranty

Schedule of Accrued Warranty 

   Fiscal Year Ended 
   December 26, 2020   December 28, 2019   December 29, 2018 
Beginning balance  $509,000   $571,000   $649,000 
Additions   435,000    471,000    159,000 
Claim and reversals   (436,000)   (533,000)   (237,000)
Ending Balance  $508,000   $509,000   $571,000