Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Income Per Share

The following table sets forth the computation of basic and diluted net income per share:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Numerator:
Net income	$	91.7	$	47.4	$	234.5	$	97.6
Denominator:
Shares used in net income per common share – basic		55,173,000		54,945,000		55,060,000		54,636,000
Effect of dilutive securities:
Restricted stock units and stock appreciation rights		226,000		259,000		241,000		409,000
Shares used in net income per common share – diluted		55,399,000		55,204,000		55,301,000		55,045,000
Net income per common share:
Basic	$	1.66	$	0.86	$	4.26	$	1.79
Diluted	$	1.66	$	0.86	$	4.24	$	1.77