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

6 Months Ended

Jun. 30, 2013

Net (loss) income per share attributable to common stockholders

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

	Three Months EndedJune 30,					Six Months Ended June 30,
	2013			2012		2013			2012
	(in thousands)
Numerator:
Net (loss) income attributable to common stockholders, basic and diluted	$	(399	)	$	1,461	$	(1,520	)	$	3,118
Denominator:
Weighted average common stock, basic	35,670			34,799		35,634			34,384
Dilutive effect of stock-based awards	—			2,604		—			2,937
Weighted average common stock, dilutive	35,670			37,403		35,634			37,321
Net (loss) income per share attributable to common stockholders:
Basic	$	(0.01	)	$	0.04	$	(0.04	)	$	0.09
Diluted	$	(0.01	)	$	0.04	$	(0.04	)	$	0.08