Net Income Per Share and Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Calculation of basic and diluted earnings per share

The following table sets forth the computation of basic and diluted net income per share for the periods presented (in millions of dollars, except share and per share amounts):

	Quarter Ended
	March 31,
	2019		2018
Numerator:
Net income	$	28.0	$	25.7
Denominator – Weighted-average common shares outstanding (in thousands):
Basic	16,108		16,707
Add: dilutive effect of non-vested common shares, restricted stock units and performance shares1	264		324
Diluted	16,372		17,031
Net income per common share, Basic:	$	1.74	$	1.54
Net income per common share, Diluted:	$	1.71	$	1.51

____________________

¹  During the quarter ended March 31, 2019 a total of four thousand securities were excluded from the weighted-average diluted shares computation as their inclusion would have been anti-dilutive. There were no anti-dilutive securities during the quarter ended March 31, 2018.