Earnings Per Share

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

The following table sets forth the computation of basic and diluted net earnings per share (dollars and shares in millions, except per share amounts):

	Year Ended December 31,
	2020		2019		2018
Earnings
Net income	$	63.2	$	57.7	$	45.5
Shares
Weighted-average common shares outstanding (basic shares)	45.1		45.7		46.0
Adjustment for assumed dilution:
Restricted stock units	0.2		0.2		0.1
Performance shares	0.1		0.1		—
Weighted-average shares assuming dilution (diluted shares)	45.4		46.0		46.1
Earnings per share
Basic(1)	$	1.40	$	1.26	$	0.99
Diluted(1)	$	1.39	$	1.25	$	0.99

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(1)    Basic and diluted earnings per share (“EPS”) are calculated based on unrounded actual amounts.

The number of common shares that were not included in the computation of diluted earnings per share because the effect would have been anti-dilutive were 266,101, 228,596, and 340,819 for the years ended December 31, 2020, 2019, and 2018, respectively.