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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Summary of Earnings Per Share

Per share amounts are computed as follows:

		Three Months Ended March 31
		2015				2014
Numerator (in millions):
Net income available to common stockholders		$	17.9			$	16.9
Denominator (in thousands):
Weighted average common shares outstanding			24,301				24,362
Dilutive effect of stock options and awards			507				273
Denominator for diluted earnings per share			24,808				24,635
Net income per share, basic:		$	0.74			$	0.69
Net income per share, diluted:		$	0.72			$	0.69

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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