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. 26, 2021		$ 15.2
Balance, end of period at Mar. 27, 2022		15.2
Balance, beginning of period (in shares) at Dec. 26, 2021			124,000,000.0
Balance, beginning of period at Dec. 26, 2021	$ 945.1		$ 0.0	$ 1,578.9	$ 0.6	$ (634.4)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	7.0			7.0
Issuance of common stock for employee stock purchase plan and stock options (in shares)			200,000
Issuance of common stock for employee stock purchase plan and stock options	2.9			2.9
Restricted stock issued and related taxes (in shares)			600,000
Restricted stock issued and related taxes	(6.8)			(6.8)
Net income (loss)	(15.9)					(15.9)
Balance, end of period (in shares) at Mar. 27, 2022			124,800,000
Balance, end of period at Mar. 27, 2022	$ 932.3		$ 0.0	1,582.0	0.6	(650.3)
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	125,985,306		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)
Net income (loss)	(7.0)					(7.0)
Other comprehensive income, 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	126,678,288		126,700,000
Balance, end of period at Mar. 26, 2023	$ 931.2		$ 0.0	$ 1,610.0	$ (0.5)	$ (678.3)