Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Schedule of Calculation of Basic and Diluted Net Income 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 September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Numerator:
Net income	$	0.4	$	25.4	$	22.9	$	72.6
Denominator – Weighted-average common shares outstanding (in thousands):
Basic		15,794		15,956		15,804		16,042
Add: dilutive effect of non-vested common shares, restricted stock units and performance shares1		71		169		100		193
Diluted		15,865		16,125		15,904		16,235
Net income per common share, Basic:	$	0.02	$	1.59	$	1.45	$	4.52
Net income per common share, Diluted:	$	0.02	$	1.57	$	1.44	$	4.47

^{1 Quantities in the following discussion are denoted in whole shares. During the quarter and nine months ended September 30, 2020, approximately 69,000 shares and 41,000 shares, respectively, were excluded from the weighted-average diluted shares computation as their inclusion would have been anti-dilutive. During both the quarter and nine months ended September 30, 2019, approximately 7,000 shares were excluded from the weighted-average diluted shares computation as their inclusion would have been anti-dilutive.}