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Net Income Per Share (Tables)

6 Months Ended

Jun. 30, 2011

Net Income Per Share

Reconciliation between Basic and Diluted Weighted Average Shares Outstanding

		For the three  months ended June 30,								For the six months ended June 30,
(in thousands, except per share data)		2011				2010				2011				2010
Net income		$	37,035			$	41,185			$	83,328			$	85,313
Net income attributable to unvested awarded performance stock			(1,165	)			(1,295	)			(2,563	)			(2,688	)
Net income attributable to common shares		$	35,870			$	39,890			$	80,765			$	82,625
Weighted average basic number of common shares outstanding			142,873				142,154				142,756				142,133
Less unvested awarded performance stock included in weighted average basic shares outstanding			(4,494	)			(4,469	)			(4,391	)			(4,479	)
Weighted average number of common shares outstanding for basic earnings per common share			138,379				137,685				138,365				137,654
Dilutive effect of stock options			1,563				1,420				2,585				1,283
Weighted average number of shares outstanding			139,942				139,105				140,950				138,937
Net income per share:
Basic		$	0.26			$	0.29			$	0.58			$	0.60
Diluted		$	0.26			$	0.29			$	0.57			$	0.59

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- Definition

Disclosure of the methodology and assumptions used in the reconciliation of earnings per share, which may include the individual income and share amount effects of all securities that affect earnings per share, the effect that has been given to preferred dividends in arriving at income available to common stockholders in computing basic earnings per share, securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic EPS in the future that were not included in the computation of diluted EPS because to do so would have been antidilutive for the period(s) presented and a description of any transaction that occurs after the end of the most recent period but before issuance of the financial statements that would have changed materially the number of common shares or potential common shares outstanding at the end of the period if the transaction had occurred before the end of the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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