Consolidated Statements of Stockholders' Equity (Deficit) (unaudited) - 3 months ended Mar. 31, 2018 - USD ($) $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated other comprehensive (loss)
Beginning Balance (in shares) at Dec. 31, 2017		116,650,388	12,240,427
Beginning Balance at Dec. 31, 2017	$ 33.4	$ 1.2	$ (59.6)	$ 337.9	$ (244.5)	$ (1.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	2.7			2.7
Issuance of common stock related to share-based compensation plans (in shares)		3,603
Issuance of Common Stock and Stock Warrants (in shares)		4,665,594
Issuance of Common Stock and Stock Warrants	$ 19.3			19.3
Exercise of vested stock options (in shares)	100,012	100,012
Exercise of vested stock options	$ 0.2			0.2
Dividends paid/accrued dividends	(4.6)			(4.6)
Acquisition of treasury stock related to equity award plans (in shares)			(362,402)
Acquisition of treasury stock related to equity award plans	(1.9)		$ (1.9)
Net Change on derivatives designated as cash flow hedges, net of tax of $0.1	(0.2)					(0.2)
Foreign currency translation adjustments	(0.5)					(0.5)
Net (loss) income	(23.3)				(23.3)
Ending Balance (in shares) at Mar. 31, 2018		121,419,597	12,602,829
Ending Balance at Mar. 31, 2018	$ 25.1	$ 1.2	$ (61.5)	$ 355.5	$ (267.8)	$ (2.3)