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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The calculation of basic and diluted earnings per share was as follows (in thousands, except per share data):
 
Year Ended December 31,
 
2015
 
2014
 
2013
Net loss attributable to common shareholders
$
(52,286
)
 
$
(39,674
)
 
$
(43,413
)
Weighted-average common shares outstanding
52,767

 
37,959

 
33,948

Basic and diluted net loss per share attributable to common shareholders
$
(0.99
)
 
$
(1.05
)
 
$
(1.28
)