CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' DEFICIT - USD ($) $ in Millions	Common Stock	Treasury Stock at Cost	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Total
Balances at beginning of period at Dec. 31, 2018	$ 0.9	$ (78.1)	$ 312.7	$ (6.5)	$ (510.8)	$ (281.8)
Balances at beginning of period (in shares) at Dec. 31, 2018	82,680,380
Increase (Decrease) in Stockholders' Deficit
Changes in accumulated other comprehensive loss, net				(3.1)		(3.1)
Stock-based compensation			2.1			2.1
Issuance of restricted stock, net (in shares)	1,702,482
Purchase of shares		(1.1)				(1.1)
Purchase of shares (in shares)	(108,937)
Net income					8.4	8.4
Balances at end of period at Mar. 31, 2019	$ 0.9	(79.2)	314.8	(9.6)	(502.4)	(275.5)
Balances at end of period (in shares) at Mar. 31, 2019	84,273,925
Balances at beginning of period at Dec. 31, 2019	$ 0.9	(79.7)	322.8	(15.5)	(474.4)	$ (245.9)
Balances at beginning of period (in shares) at Dec. 31, 2019	84,103,108					84,103,108
Increase (Decrease) in Stockholders' Deficit
Changes in accumulated other comprehensive loss, net				(3.0)		$ (3.0)
Stock-based compensation			2.7			2.7
Issuance of restricted stock, net (in shares)	2,858,421
Purchase of shares		(0.7)				(0.7)
Purchase of shares (in shares)	(199,520)
Net income					0.1	0.1
Balances at end of period at Mar. 31, 2020	$ 0.9	$ (80.4)	$ 325.5	$ (18.5)	$ (474.3)	$ (246.8)
Balances at end of period (in shares) at Mar. 31, 2020	86,762,009					86,762,009