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Earnings per Share
 12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Earnings per Share
Earnings per Share
The following table provides a reconciliation of the components used in the calculation of basic and diluted earnings per share for the periods presented:
 
Year Ended December 31,
 
2015
 
2014
 
2013
Net loss
$
(1,582,961
)
 
$
(409,592
)
 
$
(143,070
)
Less: Preferred stock dividends 1
(22,789
)
 
(17,148
)
 
(6,900
)
Less: Induced conversion of preferred stock
—

 
(4,256
)
 
—

Net loss attributable to common shareholders – basic and diluted
$
(1,605,750
)
 
$
(430,996
)
 
$
(149,970
)
 
 
 
 
 
 
Weighted-average shares – basic
73,639

 
68,887

 
62,335

Effect of dilutive securities 2
—

 
—

 
—

Weighted-average shares – diluted
73,639

 
68,887

 
62,335

______________________
1 Preferred stock dividends were excluded from diluted earnings per share for the years ended December 31, 2015, 2014 and 2013, as the assumed conversion of the outstanding preferred stock would have been anti-dilutive.
2 For 2015 and 2014, approximately 30.2 million and 26.6 million potentially dilutive securities, including the Series A and Series B Preferred Stock, stock options and restricted stock units had the effect of being anti-dilutive and were excluded from the calculation of diluted earnings per common share. For 2013, approximately and 19.8 million, respectively, potentially dilutive securities, including the Series A Preferred Stock, stock options and restricted stock units had the effect of being anti-dilutive and were excluded from the calculation of diluted earnings per common share.