Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Net Income or Loss Per Share

Net loss per share was determined as follows (in thousands, except per share amounts):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2013			2012			2013			2012
Numerator:
Net loss	$	(11,302	)	$	(9,711	)	$	(20,253	)	$	(20,522	)
Denominator:
Weighted-average ordinary shares outstanding		17,679			14,497			17,679			14,497
Basic and diluted net loss per share	$	(0.64	)	$	(0.67	)	$	(1.15	)	$	(1.42	)

Ordinary Shares Equivalent Not Included in Diluted Net Loss Per Share

The equivalent ordinary shares not included in diluted net loss per share because their effect would be anti-dilutive are as follows (in thousands):

	June 30,
	2013		2012
Options to purchase ordinary shares		1,836		1,096
Restricted stock units		—		328
		1,836		1,424