Net Loss per Share (Tables)

9 Months Ended

Sep. 30, 2014

Computation of Basic and Diluted Net Loss per Share

The following table sets forth the computation of the basic and diluted net loss per share for the periods indicated (in thousands, except per share amounts):

		Three months ended September 30,						Nine months ended September 30,
		2014			2013			2014			2013
Numerator:
Net loss	$	(1,937	)	$	(9,363	)	$	(21,304	)	$	(29,887	)
Denominator:
Weighted average shares used to compute basic and diluted net loss per share		32,383			31,185			31,930			30,848

Basic and diluted net loss per share	$	(0.06	)	$	(0.30	)	$	(0.67	)	$	(0.97	)

Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss per Share Attributable to Common Stockholders

The Company has excluded the impact of the following outstanding employee stock options, restricted stock units, common stock warrants and shares expected to be issued under its employee stock purchase plan from the computation of diluted net loss per share, as their effect would have been antidilutive (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Employee stock options		3,735		3,980		3,735		3,980
Restricted stock units		668		1,136		668		1,136
Employee stock purchase plan		258		236		258		236
Common stock warrants		4		4		4		4
		4,665		5,356		4,665		5,356