Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Increase (Decrease) in Stockholders' Equity        
Balance     $ 158,283  
Balance (in shares)     173,644,532  
Net loss attributable to the Company $ (9,226) $ 3,877 $ (20,277) $ (71,980)
Stock based compensation     3,435  
Stock option exercises     131  
Balance $ 141,572   $ 141,572  
Balance (in shares) 173,827,314   173,827,314  
Common Stock        
Increase (Decrease) in Stockholders' Equity        
Balance     $ 1,736  
Balance (in shares)     173,644,532  
Stock based compensation     $ 1  
Stock based compensation (in shares)     47,337  
Stock option exercises     $ 1  
Stock option exercises (in shares)     116,667  
Stock dividend (in shares)     18,778  
Balance $ 1,738   $ 1,738  
Balance (in shares) 173,827,314   173,827,314  
Additional Paid-in-Capital        
Increase (Decrease) in Stockholders' Equity        
Balance     $ 1,096,392  
Stock based compensation     3,434  
Stock option exercises     130  
Stock dividend     53  
Balance $ 1,100,009   1,100,009  
Accumulated Other Comprehensive Income        
Increase (Decrease) in Stockholders' Equity        
Balance     898  
Balance 898   898  
Treasury Stock        
Increase (Decrease) in Stockholders' Equity        
Balance     $ (2,662)  
Balance (in shares)     378,116  
Balance $ (2,662)   $ (2,662)  
Balance (in shares) 378,116   378,116  
Accumulated Deficit        
Increase (Decrease) in Stockholders' Equity        
Balance     $ (938,081)  
Net loss attributable to the Company     (20,277)  
Stock dividend     (53)  
Balance $ (958,411)   $ (958,411)