Income (loss) per share (Tables)

6 Months Ended

Jun. 30, 2012

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



	Three months ended June 30,						Six months ended June 30,
	2012			2011			2012			2011
Numerator:
Net income (loss)	$	1,181		$	(1,497	)	$	345		$	(1,342	)
Less: undistributed earnings allocated to preferred stockholders	(1,078		)	—			(345		)	—
Net income (loss) attributable to common stockholders	103			(1,497		)	—			(1,342		)
Denominator:
Weighted-average shares used to compute basic net income (loss) per common share	21,738			3,313			12,700			3,164
Effect of potentially dilutive securities:
Employee stock options	2,698			—			2,622			—
Stock warrants	84			—			99			—
Weighted average shares used to compute diluted income (loss) per common share	24,520			3,313			15,421			3,164
Net income (loss) per share
Basic and diluted net income (loss) per common share	$	0.00		$	(0.45	)	$	0.00		$	(0.42	)

The following securities were not included in the calculation of diluted shares outstanding as the effect would have been anti-dilutive:



	Three months ended June 30,		Six months ended June 30,
(in thousands)	2012	2011	2012	2011
Convertible preferred stock (on an if converted basis)	—	12,916	—	12,916
Options to purchase common stock	127	3,311	306	3,311
Common stock subject to repurchase	—	284	—	284
Warrants to purchase convertible preferred stock	—	213	—	213
Restricted stock units	80	—	40	—