CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Millions	Total	Redeemable Noncontrolling Interest	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Balance, beginning of period at Dec. 25, 2022		$ 11.2
Redeemable Noncontrolling Interest
Net income (loss)		1.2
Balance, end of period at Mar. 26, 2023		12.4
Balance, beginning of period (in shares) at Dec. 25, 2022			126,000,000.0
Balance, beginning of period at Dec. 25, 2022	$ 936.3		$ 0.0	$ 1,608.4	$ (0.8)	$ (671.3)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	6.6			6.6
Issuance of common stock for employee stock purchase plan and stock options (in shares)			300,000
Issuance of common stock for employee stock purchase plan and stock options	2.9			2.9
Restricted stock issued and related taxes (in shares)			400,000
Restricted stock issued and related taxes	(2.6)			(2.6)
Gain on interest rate swap contract	0.0
Net income (loss)	(7.0)					(7.0)
Other comprehensive income (loss), net of tax	0.3				0.3
Changes in noncontrolling interest	(5.3)			(5.3)
Balance, end of period (in shares) at Mar. 26, 2023			126,700,000
Balance, end of period at Mar. 26, 2023	$ 931.2		$ 0.0	1,610.0	(0.5)	(678.3)
Balance, beginning of period at Dec. 31, 2023		22.5
Balance, end of period at Mar. 31, 2024		$ 22.5
Balance, beginning of period (in shares) at Dec. 31, 2023	129,286,964		129,300,000
Balance, beginning of period at Dec. 31, 2023	$ 976.0		$ 0.0	1,654.5	1.7	(680.2)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	9.2			9.2
Issuance of common stock for employee stock purchase plan and stock options (in shares)			300,000
Issuance of common stock for employee stock purchase plan and stock options	3.6			3.6
Restricted stock issued and related taxes (in shares)			1,200,000
Restricted stock issued and related taxes	(15.1)			(15.1)
Issuance of common stock for equity raise (in shares)			19,200,000
Issuance of common stock for equity raise	330.7		$ 0.2	330.5
Gain on interest rate swap contract	1.3				1.3
Net income (loss)	1.3					1.3
Other comprehensive income (loss), net of tax	$ (0.9)				(0.9)
Balance, end of period (in shares) at Mar. 31, 2024	150,020,266		150,000,000.0
Balance, end of period at Mar. 31, 2024	$ 1,306.1		$ 0.2	$ 1,982.7	$ 2.1	$ (678.9)