Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2015

Outstanding Options and Warrants were Excluded from Computation of Basic and Diluted Net Loss Per Share

The following outstanding options and warrants were excluded from the computation of basic and diluted net loss per share for the periods presented because their effect would have been anti-dilutive (in thousands):


	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2015		2014		2015		2014
Options to purchase common stock		4,039		3,337		4,039		3,337
Restricted stock units		15		—		15		—
Common stock warrants		572		596		572		596