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CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Common Stock	Paid-In Capital	Retained Deficit	Accum. Other Comprehensive Income	Common Stock In Treasury
Beginning balance at Dec. 31, 2018	$ 414.9	$ 0.5	$ 1,295.4	$ (650.1)	$ 244.9	$ (475.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(0.8)			(0.8)
Other comprehensive loss, net	1.7				1.7
Incentive plan activity	3.4		3.4
Long-term incentive compensation expense	2.6		2.6
Restricted stock and restricted stock unit vesting	(6.5)		(21.5)			15.0
Ending balance at Mar. 30, 2019	415.3	0.5	1,279.9	(650.9)	246.6	(460.8)
Beginning balance at Dec. 31, 2019	502.4	0.5	1,302.4	(584.8)	244.3	(460.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	22.7			22.7
Other comprehensive loss, net	(12.9)				(12.9)
Incentive plan activity	4.7		4.7
Long-term incentive compensation expense	3.0		3.0
Restricted stock and restricted stock unit vesting	(4.3)		(11.6)			7.3
Ending balance at Mar. 28, 2020	$ 515.1	$ 0.5	$ 1,298.5	$ (562.6)	$ 231.4	$ (452.7)

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