BASIC AND DILUTED EARNINGS PER COMMON SHARE - Components of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Numerator:
Loss from continuing operations, net of taxes	$ (75.8)	$ (91.7)
Income from discontinued operations, net of taxes	0.7	1.4
Net loss	$ (75.1)	$ (90.3)
Denominator:
Weighted average common shares outstanding - Basic (shares)	52,913,388	52,673,672
Effect of dilutive restricted stock (shares)	0	0
Weighted average common shares outstanding - Diluted (shares)	52,913,388	52,673,672
Basic loss per common share:
Continuing operations (usd per share)	$ (1.43)	$ (1.74)
Discontinued operations (usd per share)	0.01	0.03
Net loss (usd per share)	(1.42)	(1.71)
Diluted loss per common share:
Continuing operations (usd per share)	(1.43)	(1.74)
Discontinued operations (usd per share)	0.01	0.03
Net loss (usd per share)	$ (1.42)	$ (1.71)
Restricted Stock and Restricted Stock Units
Diluted loss per common share:
Unvested restricted stock and RSUs under the Stock Plan (in shares)	571,069	104,411