Earnings Per Share Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Computation Of Net Income Per Share

The computation of earnings per share is as follows:

	Three Months Ended				Nine Months Ended
	September 30, 2013		September 30, 2012		September 30, 2013		September 30, 2012
	(in thousands, except per share data)
Basic earnings per share:
Net income	$	31,822	$	7,675	$	63,982	$	9,255
Shares used in computation:
Weighted-average common shares outstanding	59,108		55,541		57,769		55,508
Basic earnings per share	$	0.54	$	0.14	$	1.11	$	0.17
Diluted earnings per share:
Net income	$	31,822	$	7,675	$	63,982	$	9,255
Senior Convertible Notes interest expense, net of tax	—		49		49		146
Numerator for diluted earnings per share	$	31,822	$	7,724	$	64,031	$	9,401
Shares used in computation:
Weighted-average common shares outstanding	59,108		55,541		57,769		55,508
Senior Convertible Notes shares	—		2,331		956		2,331
Employee stock options	1,882		857		1,853		990
Weighted-average number of shares	60,990		58,729		60,578		58,829
Diluted earnings per share	$	0.52	$	0.13	$	1.06	$	0.16

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, 2013	September 30, 2012	September 30, 2013	September 30, 2012
	(in thousands)
Employee stock options	12	1,782	260	1,199