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Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2012

Earnings Per Share [Abstract]

Summary of Earnings per share

		Three Months Ended September 30								Nine Months Ended September 30
		2012				2011				2012				2011
Numerator (in millions):
Net income/(loss) available to common stockholders		$	15.5			$	(16.8	)		$	55.6			$	29.3
Denominator (in thousands):
Weighted average common shares outstanding			23,240				23,711				23,148				23,698
Dilutive effect of stock options and awards			683				0				724				918
Denominator for diluted earnings per share			23,923				23,711				23,872				24,616
Net income/(loss) per share, basic		$	0.67			$	(0.71	)		$	2.40			$	1.24
Net income/(loss) per share, diluted		$	0.65			$	(0.71	)		$	2.33			$	1.19

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations.

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