Description of Business and Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2014

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of computation of basic and diluted net income (loss) per share

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

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2014			2013		2014			2013
Numerator
Net income (loss)	$	(3,292	)	$	6,027	$	(4,154	)	$	9,154
Denominator
Weighted-average common shares outstanding	29,284			28,884		29,146			28,857
Effect of potentially dilutive securities:
Options to purchase common stock	—			35		—			17
Restricted stock awards	—			1		—			4
Restricted stock unit awards	—			20		—			5
Weighted-average common shares outstanding, assuming dilution	29,284			28,940		29,146			28,883
Net income (loss) per share
Basic	$	(0.11	)	$	0.21	$	(0.14	)	$	0.32
Diluted	$	(0.11	)	$	0.21	$	(0.14	)	$	0.32

Schedule of instruments convertible into common shares that are not included in the denominator used in the diluted net income (loss) per share calculation because to do so would be anti-dilutive

The following table summarizes instruments that may be convertible into common shares that are not included in the denominator used in the diluted net income (loss) per share calculation because to do so would be anti-dilutive (in thousands):

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2014	2013	2014	2013
Outstanding options to purchase common stock	701	543	701	743
Unvested restricted stock awards	543	455	543	455
Unvested restricted stock unit awards	168	—	168	13