Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2012

Earnings Per Share [Abstract]

Computation Of Net Income (Loss) Per Share

The computation of earnings per share is as follows:

	Three Months Ended				Nine Months Ended
	September 30, 2012		September 30, 2011		September 30, 2012		September 30, 2011
	(in thousands, except per share data)
Basic earnings per share:
Net income	$	7,675	$	62,460	$	9,255	$	190,907
Shares used in computation:
Weighted-average common shares outstanding	55,541		52,569		55,508		52,599
Basic earnings per share	$	0.14	$	1.19	$	0.17	$	3.63
Diluted earnings per share:
Net income	$	7,675	$	62,460	$	9,255	$	190,907
Convertible Notes interest expense, net of tax	49		—		146		—
Numerator for diluted earnings per share	$	7,724	$	62,460	$	9,401	$	190,907
Shares used in computation:
Weighted-average common shares outstanding	55,541		52,569		55,508		52,599
Convertible notes shares	2,331		—		2,331		—
Employee stock options	857		1,301		990		1,409
Weighted-average number of shares	58,729		53,870		58,829		54,008
Diluted earnings per share	$	0.13	$	1.16	$	0.16	$	3.53

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table summarizes the potential common shares excluded from the diluted calculation:

	Three Months Ended		Nine Months Ended
	September 30, 2012	September 30, 2011	September 30, 2012	September 30, 2011
	(in thousands)
Employee stock options	1,782	189	1,199	76