NET INCOME PER SHARE

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

NET INCOME PER SHARE

NET (LOSS) INCOME PER SHARE

Basic net (loss) income per share is calculated by using the weighted-average number of common shares outstanding during that period. Diluted net income per share is calculated giving effect to all dilutive potential common shares that were outstanding during the period. Dilutive potential common shares consist of incremental common shares issuable upon exercise of stock options and vesting of restricted stock units for all periods and accrued issuance of shares under employee stock purchase plans.

A reconciliation of the numerator and denominator of basic and diluted net (loss) income per share is as follows:

	Three Months Ended
	March 31, 2013			March 31, 2012
	(In thousands, except per share data)
Net (loss) income	$	(47,667	)	$	20,387
Weighted-average shares - basic	428,999			440,265
Dilutive effect of incremental shares and share equivalents	—			4,662
Weighted-average shares - diluted	428,999			444,927
Net (loss) income per share:
Basic
Net (loss) income per share - basic	$	(0.11	)	$	0.05
Diluted
Net (loss) income per share - diluted	$	(0.11	)	$	0.05

The following table summarizes securities which were not included in the “Weighted-average shares — diluted” used for calculation of diluted net income per share, as their effect would have been anti-dilutive:

	Three Months Ended
	March 31, 2013	March 31, 2012
	(In thousands)
Employee stock options and restricted stock units outstanding	9,818	2,842