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Net Loss Per Share
 9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Net Loss Per Share
Net Loss Per Share

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
)


Incremental shares from stock options and restricted stock awards are computed by the treasury stock method. The weighted average shares listed below were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive for the periods presented or were otherwise excluded under the treasury stock method. The treasury stock method calculates dilution assuming the exercise of all in-the-money options and vesting of restricted stock, reduced by the repurchase of shares with the proceeds from the assumed exercises, unrecognized compensation expense for outstanding awards and the estimated tax benefit of the assumed exercises.
 
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