Earnings per Common Share (Tables)

3 Months Ended

Mar. 31, 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 month periods ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018		2017
Net income	$	36.7	$	23.2
Weighted average common shares outstanding for basic earnings per share computation	56,241,201		44,680,258
Dilutive effects of stock-based compensation	410,977		558,650
Weighted average common shares outstanding for diluted earnings per common share computation	56,652,178		45,238,908
Basic earnings per common share	$	0.65	$	0.52
Diluted earnings per common share	$	0.65	$	0.51
Anti-dilutive unvested time restricted stock	139,943		96,897