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NET INCOME PER SHARE
 9 Months Ended
Sep. 30, 2014
Earnings Per Share [Abstract]  
NET INCOME PER SHARE
NET INCOME (LOSS) PER SHARE
Basic and diluted net income (loss) per share was as follows:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2014
 
2013
 
2014
 
2013
 
(In thousands, except per share amounts)
 
 
 
(As adjusted)*
 
 
 
(As adjusted)*
Basic net income (loss) per share:
 
 
 
 
 
 
 
Net income (loss)
$
9,807

 
$
(30,330
)
 
$
16,838

 
$
(34,838
)
Weighted average common shares outstanding
32,450

 
27,896

 
32,374

 
27,855

Basic net income (loss) per common share
$
0.30

 
$
(1.09
)
 
$
0.52

 
$
(1.25
)
 
 
 
 
 
 
 
 
Diluted net income (loss) per share:
 
 
 
 
 
 
 
Net income (loss)
$
9,807

 
$
(30,330
)
 
$
16,838

 
$
(34,838
)
 
 
 
 
 
 
 
 
Weighted average common shares outstanding — Basic
32,450

 
27,896

 
32,374

 
27,855

Effect of dilutive securities:
 
 
 
 
 
 
 
Stock options and restricted stock
456

 
—

 
470

 
—

Weighted average common shares for diluted earnings per share
32,906

 
27,896

 
32,844

 
27,855

Diluted net income (loss) per common share
$
0.30

 
$
(1.09
)
 
$
0.51

 
$
(1.25
)


* See Note 1 of these condensed consolidated financial statements for discussion of the impact of the change in accounting for the medical device excise tax.

At September 30, 2014 and 2013, the Company had 1.4 million and 1.7 million of outstanding stock options, respectively. The Company also has warrants outstanding relating to its 2016 Notes at September 30, 2014 and 2013 and the Company's 2016 Notes are convertible to common shares in certain circumstances (see Note 5). Stock options, restricted stock, warrants and the excess conversion value of the 2016 Notes are included in the diluted earnings per share calculation using the treasury stock method, unless the effect of including such items would be anti-dilutive.

For the three months ended September 30, 2014 and 2013, 0.2 million of anti-dilutive stock options were excluded from the diluted earnings per share calculation. For the nine months ended September 30, 2014, 0.2 million of anti-dilutive stock options were excluded. For the three and nine months ended September 30, 2013, all stock options, and all restricted stock were excluded from the diluted earnings per share calculation using the treasury stock method because of their anti-dilutive effect. The effect of outstanding warrants were anti-dilutive because the strike price of the warrants exceeded the Company’s average stock price for the periods, and the potential excess conversion value of the 2016 Notes were anti-dilutive because the conversion price exceeded the Company's stock price; therefore, these amounts have been excluded from the diluted earnings per share calculation in all periods presented.