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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $)
In Thousands
Total
Convertible Perpetual Preferred Stock
Common Stock
Additional Paid-In Capital
Treasury Stock
Accumulated Deficit
Noncontrolling Interest
Beginning Balance at Dec. 31, 2009 $ (195,905) $ 5 $ 203 $ 2,961,613 $ (25,079) $ (3,142,699) $ 10,052
Beginning Balance (in shares) at Dec. 31, 2009     208,715        
Beginning Balance (in shares) at Dec. 31, 2009   4,650          
Distributions to noncontrolling interest owners (3,515)           (3,515)
Contributions from noncontrolling interest owners 306           306
Issuance of convertible perpetual preferred stock, net (in shares)   3,000          
Issuance of convertible perpetual preferred stock, net 290,704 3   290,701      
Issuance of common stock in acquisition (in shares)     190,280        
Issuance of common stock in acquisition 1,246,334   190 1,246,144      
Common stock issued under legal settlement (in shares)     1,789        
Common stock issued under legal settlement 12,200   2 (1,835) 14,033    
Purchase of treasury stock (6,275)       (6,275)    
Retirement of treasury stock 0     (11,268) 11,268    
Stock purchase - retirement plans, net of distributions (in shares)     (96)        
Stock purchase - retirement plans, net of distributions 4,833     2,327 2,506    
Stock awards assumed in acquisition 2,152     2,152      
Stock-based compensation 39,066     39,066      
Stock-based compensation excess tax benefit 15     15      
Issuance of restricted stock awards, net of cancellations (in shares)     5,672        
Issuance of restricted stock awards, net of cancellations 0   3 (3)      
Net income 195,010         190,565 4,445
Convertible perpetual preferred stock dividends (37,442)         (37,442)  
Ending Balance at Dec. 31, 2010 1,547,483 8 398 4,528,912 (3,547) (2,989,576) 11,288
Ending Balance (in shares) at Dec. 31, 2010   7,650          
Ending Balance (in shares) at Dec. 31, 2010     406,360        
Issuance of units by royalty trusts 917,528           917,528
Distributions to noncontrolling interest owners (60,200)           (60,200)
Preferred stock issuance expense (231)     (231)      
Issuance of common stock in acquisition 0            
Purchase of treasury stock (10,834)       (10,834)    
Retirement of treasury stock 0     (10,834) 10,834    
Stock purchase - retirement plans, net of distributions (in shares)     (405)        
Stock purchase - retirement plans, net of distributions 568     3,179 (2,611)    
Stock-based compensation 47,778     47,778      
Stock-based compensation excess tax benefit 53     53      
Issuance of restricted stock awards, net of cancellations (in shares)     5,998        
Issuance of restricted stock awards, net of cancellations 0   1 (1)      
Net income 162,388         108,065 54,323
Convertible perpetual preferred stock dividends (55,583)         (55,583)  
Ending Balance at Dec. 31, 2011 2,548,950 8 399 4,568,856 (6,158) (2,937,094) 922,939
Ending Balance (in shares) at Dec. 31, 2011 7,650 7,650          
Ending Balance (in shares) at Dec. 31, 2011 411,953   411,953        
Issuance of units by royalty trusts 587,086           587,086
Sale of royalty trust units 139,360     79,056     60,304
Distributions to noncontrolling interest owners (181,727)           (181,727)
Issuance of common stock in acquisition (in shares)     73,962        
Issuance of common stock in acquisition 542,138   74 542,064      
Purchase of treasury stock (11,312)       (11,312)    
Retirement of treasury stock 0     (11,312) 11,312    
Stock purchase - retirement plans, net of distributions (in shares)     (345)        
Stock purchase - retirement plans, net of distributions (298)     2,146 (2,444)    
Stock-based compensation 47,228     47,228      
Stock-based compensation excess tax benefit (16)     (16)      
Issuance of restricted stock awards, net of cancellations (in shares)     4,789        
Issuance of restricted stock awards, net of cancellations 0   3 (3)      
Net income 246,571         141,571 105,000
Convertible perpetual preferred stock dividends (55,525)         (55,525)  
Ending Balance at Dec. 31, 2012 $ 3,862,455 $ 8 $ 476 $ 5,228,019 $ (8,602) $ (2,851,048) $ 1,493,602
Ending Balance (in shares) at Dec. 31, 2012 7,650 7,650          
Ending Balance (in shares) at Dec. 31, 2012 490,359   490,359