BASIC AND DILUTED EARNINGS PER COMMON SHARE - Components of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Numerator:
Loss from continuing operations, net of taxes	$ (294.1)	$ (185.3)	[1]
(Loss) income from discontinued operations, net of taxes	(0.1)	2.1	[1]
Net loss	$ (294.2)	$ (183.2)	[1]
Denominator:
Weighted average common shares outstanding - Basic (shares)	52,797,686	52,597,582	[1]
Effect of dilutive restricted stock (shares)	0	0
Weighted average common shares outstanding - Diluted (shares)	52,797,686	52,597,582	[1]
Basic (loss) earnings per common share:
Continuing operations (usd per share)	$ (5.57)	$ (3.52)	[1]
Discontinued operations (usd per share)	0.00	0.04	[1]
Net (loss) income (usd per share)	(5.57)	(3.48)	[1]
Diluted (loss) earnings per common share:
Continuing operations (usd per share)	(5.57)	(3.52)	[1]
Discontinued operations (usd per share)	0.00	0.04	[1]
Net (loss) income (usd per share)	$ (5.57)	$ (3.48)	[1]
Restricted Stock and Restricted Stock Units
Diluted (loss) earnings per common share:
Unvested restricted stock awards under the Stock Plan (shares)	272,298	20,804

[1] Adjusted as a result of the adoption of certain accounting pronouncements during 2018. See Note 1, "Description of Business and Summary of Significant Accounting Policies - Recently Adopted Accounting Pronouncements," for details of these adjustments.