Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2012

Net Loss Per Share [Abstract]

Net loss per share

A summary of the net loss per share for the three months ended March 31, 2012 and 2011 is as follows (in thousands, except per share amounts):

	Three MonthsEnded March 31,
	2012			2011
Net loss per share:
Numerator
Net loss	$	(10,040	)	$	(7,760	)
Denominator for basic and diluted net loss per share
Weighted-average common shares outstanding		35,199			28,674
Net loss per share - basic and diluted	$	(0.29	)	$	(0.27	)

Excluded from computation of diluted net loss as anti-dilutive

The following weighted-average outstanding stock options and restricted stock units were excluded from the computation of diluted net loss per common share for the periods presented because including them would have had an anti-dilutive effect (in thousands):

	Three MonthsEnded March 31,
	2012		2011
Stock options and restricted stock units		5,090		4,892