Net Income per Share

9 Months Ended

Sep. 30, 2012

Net Income per Share [Abstract]

Net Income per Share

7. Net Income per Share

Basic net income per share is computed using the weighted average number of common shares outstanding during the period. Diluted net income per share is computed using the weighted average number of common shares outstanding plus the number of potentially dilutive shares outstanding during the period. Potentially dilutive shares consist of the incremental common shares issuable upon the exercise of outstanding stock options and the Warrant and vesting of unvested RSUs and MSUs, using the treasury stock method. Performance-based stock options for which performance has not yet been achieved are excluded from the calculation of potentially dilutive shares. Potentially dilutive shares are excluded from the computation of earnings per share if their effect is antidilutive. The treasury stock method calculates the dilutive effect for awards with an exercise price less than the average stock price during the period presented (in thousands):

	Three months ended September 30,				Nine months ended September 30,
	2012		2011		2012		2011
Weighted average common shares outstanding, basic		40,511		38,568		40,108		37,451
Dilutive stock options, RSUs, MSUs, and the Warrant		—		590		1,317		680
Weighted average common shares outstanding, diluted		40,511		39,158		41,425		38,131
Antidilutive awards with an exercise price less than the average price during the applicable period excluded from dilutive share calculation		26		1,145		246		788
Outstanding awards with an exercise price greater than the average price during the applicable period not included in dilutive share calculation		655		3,046		848		3,057
Outstanding awards with performance conditions not completed during the applicable period not included in dilutive share calculation		190		—		157		—
Outstanding awards excluded from dilutive share calculation due to anti-dilutive effect of a loss from continuing operations		5,000		—		—		—