Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 25, 2020	Dec. 27, 2019
Payables and Accruals [Abstract]
Payroll, vacation, and bonus accruals	$ 21,340	$ 29,700
Deferred revenue	20,944	18,654	$ 4,971
Warranty reserve	14,549	11,767
Customer rebate program	4,775	2,140
Sales return allowance	3,999	3,741
Taxes	1,774	752
Incurred but not reported self-insurance	1,556	1,215
Interest payable	1,523	7,576
Other accrued liabilities	5,057	5,113
Accrued liabilities	$ 75,517	$ 80,658

Sales Rebate Accrual

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- Definition

Sales Return Allowance

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Estimated costs as of the balance sheet date of settling insured claims and costs incurred in the claims settlement process for claims that have not yet been submitted to the insurance company for reimbursement.

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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