Net Income Per Share

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Net Income (Loss) Per Share

Net Income (Loss) Per Share

The Company computes basic net income (loss) per share using the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share assumes the conversion, exercise or issuance of all potential common stock equivalents, unless the effect of inclusion would be anti-dilutive. For purposes of this calculation, common stock equivalents include the Company’s stock options, employee stock purchase plan shares, restricted stock units, including those with performance conditions, warrants, and the shares to be issued upon the conversion of the Senior Convertible Notes due in 2017 (see Note 6).

The following table sets forth the computation of basic and diluted earnings or (loss) per share attributable to the Company (in thousands, except per share data):

	Three Months Ended March 31,
	2014			2013
Numerator:
Net (loss) income attributable to the Company	$	(18,276	)	$	851
Denominator for basic and diluted net income per share:
Weighted average common shares outstanding for basic	45,798			44,025
Dilutive potential common stock outstanding:
Stock options and Employee Stock Purchase Plan (ESPP)	—			152
Restricted stock units	—			1,139
Weighted average common shares outstanding for diluted	45,798			45,316
Basic net (loss) income per share attributable to the Company	$	(0.40	)	$	0.02
Diluted net (loss) income per share attributable to the Company	$	(0.40	)	$	0.02

The following weighted outstanding common stock equivalents were not included in the calculation of net income (loss) per diluted share because their effects were anti-dilutive (in thousands):

	Three Months Ended March 31,
	2014	2013
Stock options, ESPP shares and restricted stock units	7,870	6,489
Warrants	9,553	14,694
Senior Convertible Notes	9,553	10,919
Total	26,976	32,102