Net Income per Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Reconciliation of Basic to Diluted Net Income per Share

The following is a reconciliation of basic to diluted net income per share:

	Quarter Ended				Year to Date Ended
	June 30, 2019		June 30, 2018		June 30, 2019		June 30, 2018
Net income	$	29.0	$	19.0	$	64.2	$	28.0
Shares used in net income per common share    - basic		64.3		29.0		64.3		29.1
Incremental shares of unvested restricted    common stock		0.2		0.1		0.2		0.1
Shares used in net income per common share   - diluted		64.5		29.1		64.5		29.2
Earnings per share:
Basic net income	$	0.45	$	0.66	$	1.00	$	0.96
Diluted net income	$	0.45	$	0.65	$	1.00	$	0.96