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Shareholders' Deficit - Narrative (Details) - USD ($)			3 Months Ended			9 Months Ended
	Sep. 29, 2021	Jul. 06, 2020	Sep. 29, 2021	Dec. 30, 2020	Sep. 23, 2020	Sep. 29, 2021	Sep. 23, 2020	Dec. 25, 2019
Equity, Class of Treasury Stock [Line Items]
Purchase of treasury stock (in shares)			400,000
Purchase of treasury stock			$ 6,563,000			$ 6,563,000	$ 34,193,000
Retirement of shares (in shares)				54,000,000
Volume-weighted average price (in dollars per share)				$ 10.26
Treasury stock, at cost, shares (in shares)	405,000		405,000	0		405,000
Number of shares sold					8,000,000
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Price per share (in dollars per share)					$ 9.15		$ 9.15
Proceeds from sale of stock		$ 69,600,000
Share Repurchase Program 2019
Equity, Class of Treasury Stock [Line Items]
Share repurchase, authorized amount								$ 250,000,000
Purchase of treasury stock	$ 8,600,000
Remaining shares to be repurchased	$ 241,400,000		$ 241,400,000			$ 241,400,000

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