XML 75 R36.htm IDEA: XBRL DOCUMENT v2.4.1.9

Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Summary of Earnings Per Share

Per share amounts are computed as follows:

		2014				2013				2012
Numerator (in millions):
Net income available to common stockholders		$	84.1			$	77.8			$	66.9
Denominator (in thousands):
Weighted average common shares outstanding			24,391				23,651				23,187
Dilutive effect of stock options and awards			487				505				663
Denominator for diluted earnings per share			24,878				24,156				23,850
Net income per share, basic:		$	3.45			$	3.29			$	2.89
Net income per share, diluted:		$	3.38			$	3.22			$	2.81

X

- Details

Name:	us-gaap_EarningsPerShareAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- 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

+ Details

Name:	us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration