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Earnings per Share
 12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Earnings per Share
EARNINGS PER SHARE
Basic earnings per share is based on the weighted average number of common shares outstanding. Diluted earnings per share is based on the weighted average number of common shares outstanding, as well as dilutive potential common shares which, in the Company’s case, include shares issuable under the equity compensation plans described in Note 12 of the consolidated financial statements. The weighted average number of shares and conversions utilized in the calculation of diluted earnings per share does not include potential anti-dilutive common shares aggregating 643,000, 503,000, and 762,000 at December 31, 2015, 2014, and 2013, respectively. The treasury stock method is used to calculate dilutive shares, which reduces the gross number of dilutive shares by the number of shares purchasable from the proceeds of the options assumed to be exercised and the unrecognized expense related to the restricted stock and restricted stock awards assumed to have vested.

The following table sets forth the computation of basic and diluted earnings per share for the years ended December 31 (in thousands):
 
2015
 
2014
 
2013
Numerator:
 
 
 
 
 
Income (loss) from continuing operations
$
23,476

 
$
(81,792
)
 
$
(5,629
)
Loss from discontinued operations
(28
)
 
(32
)
 
(4
)
Net income (loss) available to common shareholders
$
23,448

 
$
(81,824
)
 
$
(5,633
)
Denominator for basic earnings per share:
 
 
 
 
 
Weighted average shares outstanding
31,233

 
31,066

 
30,930

Denominator for diluted earnings per share:
 
 
 
 
 
Common stock options and restricted stock
312

 
—

 
—

Weighted average shares and conversions
31,545

 
31,066

 
30,930


For the years ended December 31, 2014 and 2013, all stock options, unvested restricted stock, and unvested restricted stock units were anti-dilutive and, therefore, not included in the dilutive loss per share calculations. The number of weighted average stock options, unvested restricted stock, and unvested restricted stock units that were not included in the dilutive loss per share calculations because the effect would have been anti-dilutive was 211,000 and 177,000 shares for the years ended December 31, 2014 and 2013, respectively.