XML 13 R23.htm IDEA: XBRL DOCUMENT v2.3.0.15

Common And Common Equivalent Shares (Tables)

9 Months Ended

Sep. 30, 2011

Common And Common Equivalent Shares [Abstract]

Schedule Of Calculation Of Shares Used In The Basic And Diluted Net Income Per Share

		Three Months  Ended September 30,								Nine Months  Ended September 30,
		2011				2010				2011				2010
Weighted average number of common shares outstanding			47,990				46,788				47,564				46,535
Weighted average number of dilutive common share equivalents			945				694				1,119				891
Weighted average number of common and common equivalent shares outstanding			48,935				47,482				48,683				47,426
Antidilutive securities not included in the dilutive earnings per share calculation			42				1,382				47				737

X

- Details

Name:	us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit).

+ References

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

-Topic 260

-SubTopic 10

-Publisher FASB

-Number

-Article

-Subparagraph

-Name Accounting Standards Codification

-Paragraph 1

-Section 50

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

+ Details

Name:	us-gaap_ScheduleOfWeightedAverageNumberOfSharesTableTextBlock
Namespace Prefix:	us-gaap
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration