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Net Income Per Share (Tables)

6 Months Ended

Jun. 30, 2011

Net Income Per Share

Calculation of Net Income Per Share

		Three Months Ended June 30,								Six Months Ended June 30,
		2011				2010				2011				2010
Basic net income per share:
Net income		$	36,425			$	12,181			$	63,130			$	20,656
Income allocated to participating securities—basic			537				521				939				1,370
Net income available to common stockholders—basic		$	35,888			$	11,660			$	62,191			$	19,286
Basic weighted average shares			141,286				143,100				141,966				143,667
Basic net income per share		$	.25			$	.08			$	.44			$	.13
Diluted net income per share:
Net income		$	36,425			$	12,181			$	63,130			$	20,656
Income allocated to participating securities—diluted			535				521				936				1,370
Net income available to common stockholders—diluted		$	35,890			$	11,660			$	62,194			$	19,286
Basic weighted average shares			141,286				143,100				141,966				143,667
Dilutive effect of potential common shares			1,299				1,231				1,391				1,332
Diluted weighted average shares			142,585				144,331				143,357				144,999
Diluted net income per share		$	.25			$	.08			$	.43			$	.13

Antidilutive Securities Excluded from Computation of Earnings Per Share

		Three Months Ended June 30,								Six Months Ended June 30,
		2011				2010				2011				2010
Total number of anti-dilutive potential common shares			803				761				664				551

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- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

Tabular disclosure of the numerators and the denominators of the basic and diluted per-share (or per-unit) computations for income from continuing operations, including the effect that has been given to preferred dividends.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Topic 260
-SubTopic 10
-Publisher FASB
-Number
-Article
-Subparagraph (a)
-Name Accounting Standards Codification
-Paragraph 1
-Section 50
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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