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Intangible and Other Assets (Details 2) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Finite Lived Intangible Assets And Deferred Debt Issuance Costs        
Intangible assets and deferred debt issuance costs, gross carrying amount $ 271,885,000 $ 271,885,000 $ 313,206,000  
Intangible assets and deferred debt issuance costs, accumulated amortization (168,544,000) (168,544,000) (153,658,000)  
Deferred debt issuance costs, gross carrying amount 44,112,000 44,112,000 44,141,000  
Deferred debt issuance costs, accumulated amortization (25,764,000) (25,764,000) (19,560,000)  
Long-lived asset impairment 46,800,000 183,445,000 6,068,000 143,874,000
Amortization of deferred debt issuance costs   7,243,000 8,977,000 5,303,000
Amortization of intangible costs   20,800,000 24,000,000 27,500,000
Intangible assets
        
Finite Lived Intangible Assets And Deferred Debt Issuance Costs        
Long-lived asset impairment 29,100,000 29,100,000    
Marketing Related
        
Finite Lived Intangible Assets And Deferred Debt Issuance Costs        
Gross Carrying Amount 3,060,000 3,060,000 3,043,000  
Accumulated Amortization (1,675,000) (1,675,000) (1,400,000)  
Marketing Related | Minimum
        
Finite Lived Intangible Assets And Deferred Debt Issuance Costs        
Useful life   5 years    
Marketing Related | Maximum
        
Finite Lived Intangible Assets And Deferred Debt Issuance Costs        
Useful life   20 years    
Customer related
        
Finite Lived Intangible Assets And Deferred Debt Issuance Costs        
Gross Carrying Amount 164,562,000 164,562,000 169,282,000  
Accumulated Amortization (86,605,000) (86,605,000) (73,566,000)  
Customer related | Minimum
        
Finite Lived Intangible Assets And Deferred Debt Issuance Costs        
Useful life   10 years    
Customer related | Maximum
        
Finite Lived Intangible Assets And Deferred Debt Issuance Costs        
Useful life   20 years    
Technology Based
        
Finite Lived Intangible Assets And Deferred Debt Issuance Costs        
Gross Carrying Amount 4,375,000 4,375,000 32,275,000  
Accumulated Amortization (3,561,000) (3,561,000) (6,747,000)  
Useful life   20 years    
Contract Based
        
Finite Lived Intangible Assets And Deferred Debt Issuance Costs        
Gross Carrying Amount 55,776,000 55,776,000 64,465,000  
Accumulated Amortization $ (50,939,000) $ (50,939,000) $ (52,385,000)  
Contract Based | Minimum
        
Finite Lived Intangible Assets And Deferred Debt Issuance Costs        
Useful life   2 years    
Contract Based | Maximum
        
Finite Lived Intangible Assets And Deferred Debt Issuance Costs        
Useful life   11 years