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Common and Common Equivalent Shares (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

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

The calculation of shares used in the basic and diluted net income per share calculation for the three and nine months ended September 30, 2013 and 2012 is as follows (in thousands):

		Three Months Ended September 30,								Nine Months Ended September 30,
		2013				2012				2013				2012
Weighted average number of common shares outstanding			49,753				48,938				49,511				48,569
Weighted average number of dilutive common share equivalents			836				871				970				1,001
Weighted average number of common and common equivalent shares outstanding			50,589				49,809				50,481				49,570
Antidilutive securities not included in the dilutive earnings per share calculation			—				38				23				35

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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

-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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