Basis of Presentation and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Basis of Presentation and Significant Accounting Policies [Abstract]

Outstanding securities considered anti-dilutive

The following table shows the total outstanding securities considered anti-dilutive and therefore excluded from the computation of diluted net loss per share (in thousands):

	December 31,
	2014		2013		2012
Options for common stock		6,666		7,087		5,603
Warrants for common stock		2,073		15,839		13,840
Total		8,739		22,926		19,443

Reconciliation of the numerators and denominators of the basic and diluted net loss per share of common stock

For the year ended December 31, 2014, the following is a reconciliation of the numerators and denominators of the basic and diluted net loss per share of common stock (in thousands):

	December 31,
	2014
Numerator
Net loss before taxes
Basic	$	(38,301	)
Adjustment for revaluation of contingent warrant liabilities		(39,512	)
Diluted	$	(77,813	)
Denominator
Weighted average shares outstanding used for basic net loss per share		107,435
Effect of dilutive warrants		7,898
Weighted average shares outstanding for dilutive net loss per share		115,333