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ACCOUNTING FOR UNCERTAINTY IN INCOME TAXES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Reconciliation of beginning and ending amount of unrecognized tax benefits [Roll Forward]
Gross unrecognized tax benefits beginning of year	$ 4,166	$ 4,378	$ 4,000
Decrease in tax positions for prior years	(82)	(129)	(366)
Increase in tax positions for current year	730	768	1,326
Lapse in statute of limitations	(922)	(851)	(582)
Gross unrecognized tax benefits end of year	3,892	4,166	4,378
Income tax penalties and interest accrued	500	$ 500	$ 500
Increase in unrecognized tax benefits is reasonably possible	$ 1,300

X

- Definition

Amount of increase reasonably possible in the next twelve months for the unrecognized tax benefit.

+ References

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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