Net Income Per Common Share

3 Months Ended

Sep. 30, 2012

Net Income Per Common Share [Abstract]

Net Income Per Common Share

2.NET INCOME PER COMMON SHARE

Net income per basic common share was calculated by dividing net income by the weighted-average number of common shares outstanding. Net income per diluted common share, as calculated using the treasury stock method, reflects the potential dilutive effects of stock award grants and exercises of dilutive outstanding stock options. The computation of diluted weighted-average earnings per share does not include stock options with an option exercise price greater than the average market price because they are antidilutive and inclusion would increase earnings per share.

The following table sets forth the calculation of net income per basic and diluted weighted-average common shares outstanding:

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2012		2011		2012		2011
Net income (in millions)		$	44.9	$	47.0	$	100.1	$	98.1
Basic weighted-average common shares outstanding			44,197,164		44,521,757		44,263,445		45,102,716
Stock options			41,208		55,910		83,759		152,368
Stock awards			0		0		2,521		1,323
Diluted weighted-average common shares outstanding			44,238,372		44,577,667		44,349,725		45,256,407
Net income per common share:
	Net income per basic common share	$	1.02	$	1.06	$	2.26	$	2.18
	Net income per diluted common share		1.01		1.05		2.26		2.17
Antidilutive shares not included in net income per diluted common
	share calculation		2,479,470		2,264,262		2,199,795		1,903,674