NET INCOME PER SHARE (Tables)

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Reconciliation of the numerator and denominator of basic and diluted net income per share

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

	Years Ended
	December 31, 2013			December 31, 2012		December 31, 2011
	(in thousands, except per share data)
Net income (loss)	$	(22,055	)	$	30,445	$	314,990
Weighted-average shares - basic	427,460			433,017		455,629
Dilutive effect of incremental shares and share equivalents	—			4,565		7,044
Weighted-average shares - diluted	427,460			437,582		462,673
Net income (loss) per share:
Basic
Net income (loss) per share - basic	$	(0.05	)	$	0.07	$	0.69
Diluted
Net income (loss) per share - diluted	$	(0.05	)	$	0.07	$	0.68

Anti-dilutive securities not included in the "Weighted-average shares - diluted" used for calculation of diluted net income per share

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

	Years Ended
	December 31, 2013	December 31, 2012	December 31, 2011
	(in thousands)
Employee stock options and restricted stock units outstanding	11,860	4,718	1,977