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Earnings (Loss) Per Common Share (Tables)
 12 Months Ended
Dec. 31, 2016
Earnings Per Share [Abstract]  
Schedule of Earnings (Loss) Per Share, Basic and Diluted
The following table summarizes the basic and diluted earnings (loss) per share calculations (in thousands, except per share amounts):
 
Year Ended December 31,
 
2016
 
2015
 
2014
Numerator - Basic
 
 
 
 
 
Net income (loss)
$
(156,079
)
 
$
106,110

 
$
229,312

Less: Net (income) loss attributable to noncontrolling interest
20,741

 
(27,000
)
 
(70,275
)
Less: Preferred stock dividends
(1
)
 
(2
)
 
(1
)
Net income (loss) available to common shareholders
$
(135,339
)
 
$
79,108

 
$
159,036

 
 
 
 
 
 
Numerator - Diluted
 
 
 
 
 

 
 
 
 
 
Net (loss) attributable to common shareholders
$
(135,339
)
 
$
79,108

 
$
159,036

Add: Net income attributable to noncontrolling interest (1), (2)
—

 
24,784

 
54,866

Add: Preferred stock dividends (2)
—

 
2

 
1

Dilutive net income (loss) available to common shareholders
$
(135,339
)
 
$
103,894

 
$
213,903

 
 
 
 
 
 
Denominator
 
 
 
 
 
Basic weighted average common shares
176,584

 
154,662

 
153,814

Exchange of noncontrolling interest for common stock (Note 12) (2)
—

 
52,976

 
52,976

Restricted stock units (2)
—

 
1,512

 
1,038

Stock to be issued pursuant to ESPP (2)
—

 
2

 
—

Diluted weighted average common shares
176,584

 
209,152

 
207,828

 
 
 
 
 
 
Earnings (loss) per common share:
 
 
 
 
 
Basic
$
(0.77
)
 
$
0.51

 
$
1.03

Diluted
$
(0.77
)
 
$
0.50

 
$
1.03

 
 
(1)
Adjusted for the additional tax expense upon the assumed conversion of the Preferred Stock
$
—

 
$
2,216

 
$
15,409

(2)
Approximate number of shares of potentially convertible preferred stock to common stock up until the time of conversion on August 26, 2016, unvested restricted stock units and stock to be issued pursuant to the ESPP have been excluded from the computation of diluted earnings (loss) per share as the effect would be anti-dilutive when the results from operations are at a net loss.
35,556

 
—

 
—