Three Months Ended

March 31,

(in millions, except per share data)

2023

2022

Basic shares used in the calculation of earnings per share

35.6

35.5

Dilutive effect of securities:

Employee stock options

—

0.3

Non-vested stock grants

—

0.3

Diluted shares used in the calculation of earnings per share

35.6

36.1

Per share effect of dilutive securities on income (loss) from
   continuing operations

$

—

$

(0.05

)

Per share effect of dilutive securities on net income (loss)

$

—

$

(0.05

)