Net income (loss) per share attributable to common stockholders (Tables)

9 Months Ended

Sep. 30, 2013

Net income (loss) per share attributable to common stockholders

Schedule of computation of basic and diluted net income (loss) per share attributable to common stockholders

	Three Months EndedSeptember 30,				Nine Months Ended September 30,
	2013		2012		2013			2012
	(in thousands)
Numerator:
Net income (loss) attributable to common stockholders, basic and diluted	$	354	$	2,777	$	(1,166	)	$	5,895
Denominator:
Weighted average common stock, basic	35,593		35,080		35,620			34,618
Dilutive effect of stock options	1,347		2,257		—			2,706
Dilutive effect of RSUs	189		—		—			—
Weighted average common stock, dilutive	37,129		37,337		35,620			37,324
Net income (loss) per share attributable to common stockholders:
Basic	$	0.01	$	0.08	$	(0.03	)	$	0.17
Diluted	$	0.01	$	0.07	$	(0.03	)	$	0.16