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Earnings per Share
 3 Months Ended
Mar. 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:
 
Three Months Ended
 
March 31,
 
2015
 
2014
Net income (loss)
$
(57,165
)
 
$
19,225

Less: Preferred stock dividends
(6,067
)
 
(1,722
)
Net income (loss) attributable to common shareholders – basic
$
(63,232
)
 
$
17,503

Add: Preferred stock dividends 1
—

 
1,722

Net income (loss) attributable to common shareholders – diluted
$
(63,232
)
 
$
19,225

 
 
 
 
Weighted-average shares – basic
71,820

 
65,611

Effect of dilutive securities 2
—

 
20,133

Weighted-average shares – diluted
71,820

 
85,744

_______________________
1 Preferred stock dividends were excluded from diluted earnings per share for the three months ended March 31, 2015, as the assumed conversion of the outstanding preferred stock would have been anti-dilutive.
2 For the three months ended March 31, 2015, approximately 31.3 million potentially dilutive securities, including the Series A Preferred Stock 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.