Net Income Per Common Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Net Income Per Common Share on Basic and Diluted Basis

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

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
(in millions, except number of shares and per share amounts)	2018		2017		2018		2017
Net income	$	41.8	$	46.0	$	66.6	$	82.7
Weighted average common shares outstanding - basic	33,938,509		34,731,866		33,903,809		34,643,594
Effect of dilutive securities:
Equity compensation awards	730,409		973,618		801,002		1,001,046
Weighted average common shares outstanding - diluted	34,668,918		35,705,484		34,704,811		35,644,640
Net income per common share:
Basic	$	1.23	$	1.32	$	1.96	$	2.39
Diluted	$	1.20	$	1.29	$	1.92	$	2.32