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Earnings Per Share
3 Months Ended
Mar. 31, 2016
Earnings Per Share [Abstract]  
Earnings Per Share

15. Earnings Per Share

     The following table sets forth the computation of basic and diluted earnings per share (in thousands, except per share data):

Three Months Ended
March 31,
20162015
Numerator for basic and diluted earnings
per share - net income (loss) attributable
to common stockholders $148,969$190,799
Denominator for basic earnings per
share - weighted average shares 355,076336,754
Effect of dilutive securities:
Employee stock options 101200
Non-vested restricted shares 253416
Redeemable shares621-
Convertible senior unsecured notes -442
Dilutive potential common shares 9751,058
Denominator for diluted earnings per
share - adjusted weighted average shares 356,051337,812
Basic earnings per share $0.42$0.57
Diluted earnings per share $0.42$0.56

The Series I Cumulative Convertible Perpetual Preferred Stock was not included in the calculations as the effect of conversions into common stock was anti-dilutive.