Description of Business and Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 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
	March 31,
	2014		2013
Numerator
Net income (loss)	$	319	$	(278	)
Denominator
Weighted-average common shares outstanding	29,047		28,825
Effect of potentially dilutive securities:
Options to purchase common stock	76		—
Restricted stock awards	53		—
Restricted stock unit awards	38		—
Employee stock purchase plan	2		—
Weighted-average common shares outstanding, assuming dilution	29,216		28,825
Net income (loss) per share
Basic	$	0.01	$	(0.01	)
Diluted	$	0.01	$	(0.01	)

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 per share calculation because to do so would be anti-dilutive (in thousands):

	Three Months Ended
	March 31,
	2014	2013
Outstanding options to purchase common stock	413	544
Unvested restricted stock awards	323	442
Unvested restricted stock unit awards	—	57