Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 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 March 31,
	2020		2019
Numerator:
Net income	$	69.1	$	12.5
Denominator:
Shares used in net income per common share – basic		54,918,000		54,147,000
Effect of dilutive securities:
Restricted stock units, stock appreciation rights and shares issued under employee stock purchase plan		318,000		701,000
Shares used in net income per common share – diluted		55,236,000		54,848,000
Net income per common share:
Basic	$	1.26	$	0.23
Diluted	$	1.25	$	0.23