Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

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

The following table sets forth the computation of basic and diluted net loss per share of common stock attributable to common stockholders:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2017			2016			2017			2016
	(in thousands, except per-share data)
Net Loss	$	(492	)	$	(44,799	)	$	(17,479	)	$	(99,383	)
Weighted average common shares outstanding — Basic	49,386			49,230			49,328			48,371
Plus incremental shares from assumed conversions:
Dilutive effect of stock options	—			—			—			—
Weighted average common shares outstanding — Diluted	49,386			49,230			49,328			48,371
Net loss per share:
Basic	$	(0.01	)	$	(0.91	)	$	(0.35	)	$	(2.05	)
Diluted	$	(0.01	)	$	(0.91	)	$	(0.35	)	$	(2.05	)

Schedule of antidilutive securities excluded from computation of diluted net income per share of common stock

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2017	2016	2017	2016
	(in thousands)
Stock options	6,133	6,758	6,287	6,321
Warrants	3,059	3,068	3,061	3,072
Unvested restricted stock awards	167	136	137	115
Total	9,359	9,962	9,485	9,508