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Common and Common Equivalent Shares (Tables)

6 Months Ended

Jun. 30, 2011

Common and Common Equivalent Shares

Schedule of Calculation of Shares Used In the Basic and Diluted Net Income Per Share

		Three Months Ended June  30,								Six Months Ended June  30,
		2011				2010				2011				2010
Weighted average number of common shares outstanding			47,531				46,516				47,341				46,409
Weighted average number of dilutive common share equivalents			1,199				1,012				1,206				989
Weighted average number of common and common equivalent shares outstanding			48,730				47,528				48,547				47,398
Antidilutive securities not included in the dilutive earnings per share calculation			63				155				50				415

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- 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

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