NET LOSS PER SHARE (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Basic and Diluted Net Loss Per Share

	Three months ended September 30,						Nine months ended September 30,
	2013			2012			2013			2012
	(in thousands, except per share amounts)						(in thousands, except per share amounts)
Net loss	$	(42,030	)	$	(49,554	)	$	(103,165	)	$	(59,220	)
Weighted-average number of shares of common stock and common stock equivalents outstanding:
Weighted-average number of common shares outstanding for computing basic earnings per share		33,943			22,824			32,588			22,691
Dilutive effect of outstanding warrants and stock awards after application of the treasury stock method*		—			—			—			—
Weighted-average number of common shares outstanding for computing diluted earnings per share		33,943			22,824			32,588			22,691
Net loss per share — basic	$	(1.24	)	$	(2.17	)	$	(3.17	)	$	(2.61	)
Net loss per share — diluted	$	(1.24	)	$	(2.17	)	$	(3.17	)	$	(2.61	)

* Warrants, stock options, restricted stock units (RSUs) and stock appreciation rights (SARs) to purchase approximately 5,293,145 and 7,371,471 shares of common stock were excluded from the net loss per share calculation for the three and nine months ended September 30, 2013 and 2012, respectively, as their effect would have been anti-dilutive.