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Earnings per share (Tables)
 9 Months Ended
Sep. 30, 2014
Earnings per share  
Computation of Net Loss per Share on Basic and Diluted Basis

The following table reflects the computation of net loss per share on a basic and diluted basis for the three and nine months ended September 30, 2014 and 2013 (in thousands, except share data):

 
   For the Three Months
Ended September 30,		   For the Nine Months
Ended September 30,		  
 
   2014   2013   2014   2013  

Income / (loss) (numerator):

                          

Loss from continuing operations

   $ (12,796 ) $ (3,861 ) $ (23,100 ) $ (10,603 )

Income from discontinued operations

     —     —     —     1,008  

Noncontrolling interest

     3,382     3,798     11,214     9,357  

Dividends on preferred shares

     5,569     —     13,359     —  

Conversion of preferred units

     —     —     —     10,456  
                   
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Net loss attributable to common shareholders

   $ (21,747 ) $ (7,659 ) $ (47,673 ) $ (29,408 )
                   
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
                   

Weighted-average shares (denominator)

     202,547,677     162,725,150     191,251,638     102,729,661  

Net loss per share—basic and diluted:

    
 		    
 		    
 		    
 		  

Loss from continuing operations

   $ (0.11 ) $ (0.05 ) $ (0.25 ) $ (0.30 )

Income from discontinued operations

     —     —     —     0.01  
                   
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Net loss per share—basic and diluted

   $ (0.11 ) $ (0.05 ) $ (0.25 ) $ (0.29 )
                   
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