Description of Business and Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2017

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 loss per share (in thousands, except per share data):

	Three Months Ended March 31,
	2017			2016
Numerator
Net loss	$	(10,399	)	$	(6,848	)
Denominator
Weighted-average common shares outstanding	32,197			31,650
Net loss per share
Basic and diluted	$	(0.32	)	$	(0.22	)

Schedule of anti-dilutive shares excluded from computation of net income (loss) per share

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

	Three Months Ended March 31,
	2017	2016
Outstanding options to purchase common stock	352	907
Unvested restricted stock awards	58	216
Unvested restricted stock unit awards	2,356	1,773
Employee stock purchase plan awards	57	90
Bonus to be paid in stock awards	102	104