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Consolidated Statements of Equity (USD $)
In Thousands, except Share data
Total
Preferred stock
Common Stock
Other Paid-in Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Treasury Stock
Noncontrolling interest
Balance at Dec. 31, 2010 $ 2,692,802 $ 15,000 $ 188,901 $ 1,026,349 $ 1,497,439 $ (31,261) $ (3,626)  
Balance (in shares) at Dec. 31, 2010   150,000            
Balance (in shares) at Dec. 31, 2010     188,901,379          
Treasury stock (in shares) at Dec. 31, 2010             (538,921)  
Net income (loss) attributable to parent         213,026      
Net loss attributable to noncontrolling interest 0              
Net income (loss) 213,026              
Other comprehensive income (15,740)         (15,740)    
Dividends declared on preferred stocks (685)       (685)      
Dividends declared on common stock (123,657)       (123,657)      
Stock-based compensation - shares     423,591          
Stock-based compensation 10,588   424 10,164        
Tax benefit (deficit) on stock-based compensation (909)     (909)        
Issuance of common stock - shares     7,515          
Issuance of common stock 142   7 135        
Balance at Dec. 31, 2011 2,775,567 15,000 189,332 1,035,739 1,586,123 (47,001) (3,626)  
Balance (in shares) at Dec. 31, 2011   150,000            
Treasury stock (in shares) at Dec. 31, 2011             (538,921)  
Balance (in shares) at Dec. 31, 2011     189,332,485          
Net income (loss) attributable to parent         (754)      
Net loss attributable to noncontrolling interest 0              
Net income (loss) (754)              
Other comprehensive income (1,720)         (1,720)    
Dividends declared on preferred stocks (685)       (685)      
Dividends declared on common stock (127,538)       (127,538)      
Stock-based compensation - shares     25,743          
Stock-based compensation 5,120   26 5,094        
Tax benefit (deficit) on stock-based compensation (1,958)     (1,958)        
Issuance of common stock - shares     11,222          
Issuance of common stock 216   11 205        
Balance at Dec. 31, 2012 2,648,248 15,000 189,369 1,039,080 1,457,146 (48,721) (3,626)  
Balance (in shares) at Dec. 31, 2012   150,000            
Treasury stock (in shares) at Dec. 31, 2012 (538,921)           (538,921)  
Balance (in shares) at Dec. 31, 2012 189,369,450   189,369,450          
Net income (loss) attributable to parent         278,933      
Net loss attributable to noncontrolling interest (363)             (363)
Net income (loss) 278,570              
Other comprehensive income 10,516         10,516    
Dividends declared on preferred stocks (685)       (685)      
Dividends declared on common stock (132,264)       (132,264)      
Stock-based compensation 5,281     5,281        
Tax benefit (deficit) on stock-based compensation (1,419)     (1,419)        
Issuance of common stock - shares     499,330          
Issuance of common stock 14,554   500 14,054        
Contribution from non-controlling interest 33,101             33,101
Balance at Dec. 31, 2013 $ 2,855,902 $ 15,000 $ 189,869 $ 1,056,996 $ 1,603,130 $ (38,205) $ (3,626) $ 32,738
Balance (in shares) at Dec. 31, 2013   150,000            
Treasury stock (in shares) at Dec. 31, 2013 (538,921)           (538,921)  
Balance (in shares) at Dec. 31, 2013 189,868,780   189,868,780