GOODWILL AND INTANGIBLE ASSETS - Amortized Intangible Assets - (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 26, 2022	Mar. 27, 2021	Dec. 25, 2021
Components of amortized intangible assets
Gross Carrying Amount	$ 291,219		$ 290,680
Accumulated Amortization	184,534		178,723
Amortization expense for intangible assets	5,849	$ 4,232
Estimated amortization expense
2022	20,044
2023	17,783
2024	15,869
2025	14,435
2026	14,012
Customer Relationships
Components of amortized intangible assets
Gross Carrying Amount	225,201		224,597
Accumulated Amortization	$ 164,130		$ 160,626
Weighted Average Life	13 years		13 years
Patents & Proprietary Technology
Components of amortized intangible assets
Gross Carrying Amount	$ 58,657		$ 58,699
Accumulated Amortization	$ 15,978		$ 13,955
Weighted Average Life	9 years		9 years
Other
Components of amortized intangible assets
Gross Carrying Amount	$ 4,511		$ 4,534
Accumulated Amortization	$ 4,087		$ 3,959
Weighted Average Life	6 years		6 years
Trade Names
Components of amortized intangible assets
Gross Carrying Amount	$ 2,850		$ 2,850
Accumulated Amortization	$ 339		$ 183
Weighted Average Life	6 years		7 years

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in remainder of current fiscal year.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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