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Accrued Liabilities
 9 Months Ended
Sep. 24, 2021
Payables and Accruals [Abstract]  
Accrued Liabilities Accrued Liabilities
Accrued liabilities as of September 24, 2021, and December 25, 2020, consisted of the following:

September 24,
2021		December 25,
2020
Payroll, vacation, and bonus accruals
$24,759 $29,700 
Deferred revenue
20,131 18,654 
Warranty reserve
15,192 11,767 
Interest payable
4,888 7,576 
Sales return allowance
4,374 3,741 
Customer rebate program
2,509 2,140 
Incurred but not reported self-insurance
1,638 1,215 
Taxes
603 752 
Other accrued liabilities
6,766 5,113 
Total accrued liabilities
$80,860 $80,658