Net Income (Loss) Per Common Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Net Income (Loss) Per Common Share on Basic and Diluted Basis

The following table presents the calculation of net income (loss) per common share on a basic and diluted basis:

	For the Three Months Ended September 30,					For the Nine Months Ended September 30,
(in millions, except number of shares and per share amounts)	2018		2017			2018		2017
Net income (loss)	$	40.6	$	(61.3	)	$	107.2	$	21.4
Weighted average common shares outstanding - basic	33,956,695		34,475,452			33,921,632		34,586,931
Effect of dilutive securities:
Equity compensation awards	699,633		—			767,211		940,242
Weighted average common shares outstanding - diluted	34,656,328		34,475,452			34,688,843		35,527,173
Net income (loss) per common share:
Basic	$	1.20	$	(1.78	)	$	3.16	$	0.62
Diluted	$	1.17	$	(1.78	)	$	3.09	$	0.60