Earnings per Share

9 Months Ended

Sep. 30, 2011

Earnings Per Share [Abstract]

Earnings per Share

3. Earnings per Share

The denominators for the computation of basic and diluted earnings per share were calculated as follows:

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2011			2010		2011			2010
	(In thousands)
Shares outstanding at the beginning of the period		46,062			38,717		45,463			38,410
Weighted-average number of shares repurchased		(235	)		—		(160	)		—
Weighted-average number of shares issued		7			3,460		390			1,357
Denominator for basic earnings per share		45,834			42,177		45,693			39,767
Dilutive effect of employee stock options and stock grants (1)		462			369		641			436
Denominator for diluted earnings per share (2)		46,296			42,546		46,334			40,203

(1)

Options to purchase common shares are included in the calculation of diluted earnings per share when their exercise prices are below the average fair value of the common shares for each of the periods presented. For the three months ended September 30, 2011, and 2010, there were approximately 316,000 and 708,000 antidilutive weighted options, respectively. For the nine months ended September 30, 2011, and 2010, there were approximately 126,000 and 738,000 antidilutive weighted options, respectively. Restricted shares are included in the calculation of diluted earnings per share when their grant date fair values are below the average fair value of the common shares for each of the periods presented. For the three months ended September 30, 2011 and 2010, there were approximately 57,000 and 9,000 antidilutive weighted restricted shares, respectively. For the nine months ended September 30, 2011 there were no antidilutive restricted shares. For the nine months ended September 30, 2010, there were approximately 9,000 antidilutive restricted shares.

(2)

Potentially dilutive shares issuable pursuant to our convertible senior notes were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive for the three month and nine month periods ended September 30, 2011 and 2010.