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Acquisition, Restructuring and Management Fee Costs - Summary of Total Acquisition, Restructuring and Management Fee Costs (Parenthetical) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 26, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Sentinel Capital Partners [Member]
Business Acquisition [Line Items]
Aacquisition costs and management fees	$ 23,275	$ 6,089	$ 3,662	$ 12,869

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- Definition

Acquisition Costs and Management Fees

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- Definition

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.

+ References

No definition available.

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