Earnings Per Share

9 Months Ended

Sep. 30, 2011

(3)	Earnings Per Share (“EPS”): The denominator used to compute basic and diluted earnings per share is as follows (in millions):

	Quarter Ended September 30,		Nine Months Ended September 30,
	2011	2010	2011	2010
Denominator for basic EPS – weighted average shares	41.7	41.3	41.6	41.2
Effect of dilutive securities:
Employee/director stock options and restricted stock units	0.4	0.2	0.4	0.2
Denominator for diluted EPS – weighted average shares	42.1	41.5	42.0	41.4

Basic earnings per share is computed based on the weighted-average number of common shares outstanding during the period. Diluted earnings per share is computed based on the weighted-average number of common shares outstanding adjusted by the number of additional shares, if any, that would have been outstanding had the potentially dilutive common shares been issued. Potentially dilutive shares of common stock include non-qualified stock options and restricted stock units.

The computation of weighted average dilutive shares outstanding excluded non-qualified stock options to purchase approximately 1.4 million and 1.6 million shares of common stock for the three months ended September 30, 2011 and 2010, respectively. The computation of weighted average dilutive shares outstanding excluded non-qualified stock options to purchase approximately 1.2 million and 1.9 million shares of common stock for each of the nine month periods ended September 30, 2011 and 2010. These options were excluded because the options' exercise prices were greater than the average market price of the Company's common stock for the periods presented and, therefore, the effect would be anti-dilutive.