Earnings per Common Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings per Share

The following table sets forth the computation of basic and diluted earnings per share for the three and six month periods ended June 30, 2018 and 2017:

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Net income	$	41.7	$	21.8	$	78.4	$	45.0
Weighted average common shares outstanding for basic earnings per share computation	56,335,186		47,612,971		56,288,453		46,170,500
Dilutive effects of stock-based compensation	363,835		461,480		381,947		510,875
Weighted average common shares outstanding for diluted earnings per common share computation	56,699,021		48,074,451		56,670,400		46,681,375
Basic earnings per common share	$	0.74	$	0.46	$	1.39	$	0.97
Diluted earnings per common share	$	0.74	$	0.45	$	1.38	$	0.96
Anti-dilutive unvested time restricted stock	85		96,262		128,461		92,626