CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Millions	Total	Redeemable Noncontrolling Interest	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Balance, beginning of period at Dec. 30, 2018		$ 0.0
Redeemable Noncontrolling Interest
Net income (loss)	$ 3.1					$ 3.1
Changes in noncontrolling interest		15.0
Balance, end of period at Mar. 31, 2019		15.0
Balance, beginning of period (in shares) at Dec. 30, 2018			103,800,000
Balance, beginning of period at Dec. 30, 2018	519.3		$ 0.0	$ 1,244.5	$ (0.7)	(724.5)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	2.6			2.6
Issuance of common stock for employee stock purchase plan, options and warrants (in shares)			200,000
Issuance of common stock for employee stock purchase plan, options and warrants	1.7			1.7
Restricted stock issued and related taxes (in shares)			100,000
Restricted stock issued and related taxes	(0.8)			(0.8)
Issuance of common stock for acquisitions (in shares)			1,800,000
Issuance of common stock for acquisitions	27.0			27.0
Net income (loss)	3.1					3.1
Other comprehensive income, net of tax	0.0
Balance, end of period (in shares) at Mar. 31, 2019			105,900,000
Balance, end of period at Mar. 31, 2019	552.9		$ 0.0	1,275.0	(0.7)	(721.4)
Balance, beginning of period at Dec. 29, 2019	15.0	15.0
Redeemable Noncontrolling Interest
Net income (loss)	(0.2)					(0.2)
Balance, end of period at Mar. 29, 2020	$ 15.0	$ 15.0
Balance, beginning of period (in shares) at Dec. 29, 2019	106,635,508		106,600,000
Balance, beginning of period at Dec. 29, 2019	$ 574.1		$ 0.0	1,286.5	(0.4)	(712.0)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	4.7			4.7
Issuance of common stock for employee stock purchase plan, options and warrants (in shares)			200,000
Issuance of common stock for employee stock purchase plan, options and warrants	2.6			2.6
Restricted stock issued and related taxes (in shares)			200,000
Restricted stock issued and related taxes	(1.2)			(1.2)
Net income (loss)	(0.2)					(0.2)
Other comprehensive income, net of tax	$ 0.2				0.2
Balance, end of period (in shares) at Mar. 29, 2020	106,960,828		107,000,000.0
Balance, end of period at Mar. 29, 2020	$ 580.2		$ 0.0	$ 1,292.6	$ (0.2)	$ (712.2)