Basic and Diluted Net Income (Loss) Per Share (Tables)

3 Months Ended

Mar. 31, 2017

Mar. 31, 2016

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]


(A)	For the three months ended March 31, 2017 and 2016, the following equity awards, by type, were excluded from the calculation, as their effect would have been anti-dilutive (in thousands):



	Three Months Ended
	March 31,
	2017	2016
Stock options	3,827	2,808
Restricted stock units	541	122
Performance based restricted stock units^(B)	1,049	2,305
Total equity award shares excluded	5,417	5,235


(B)	Performance based restricted stock units are presented based on attainment of 100% of the performance goals being met.

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

A reconciliation of the numerator and the denominator used to calculate basic and diluted net loss per share is as follows (in thousands, except per share amounts):



	Three Months Ended
	March 31,
	2017			2016
Numerator
Net loss	$	(10,008	)	$	(2,965	)
Denominator — Basic
Weighted average shares used to calculate net loss per share, basic	38,715			37,007
Denominator — Diluted
Weighted average shares used to calculate net loss per share, basic	38,715			37,007
Effect of dilutive restricted stock units ^(A)	—			—
Effect of dilutive stock options ^(A)	—			—
Weighted average shares used to calculate net loss per share, diluted	38,715			37,007
Net loss per share
Basic	$	(0.26	)	$	(0.08	)
Diluted	$	(0.26	)	$	(0.08	)