Annual report pursuant to Section 13 and 15(d)

Long Term Debt (Schedule of Long Term Debt) (Details)

v3.6.0.2
Long Term Debt (Schedule of Long Term Debt) (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Feb. 02, 2015
USD ($)
Debt Instrument [Line Items]      
Long-term debt, gross $ 1,373,783 $ 1,372,113  
Less unamortized discount 21,878 24,007  
Less unamortized deferred loan fees 15,133 15,368  
Less current portion of long-term debt 3,326 3,342  
Long-term debt, net $ 1,333,446 1,329,396  
2025 Notes | Senior Notes [Member]      
Debt Instrument [Line Items]      
Stated percentage 6.875%    
Long-term debt, gross $ 450,000 450,000  
2021 Notes | Senior Notes [Member]      
Debt Instrument [Line Items]      
Stated percentage 6.75%    
Long-term debt, gross $ 325,000 325,000  
Searchlight ALX, LP Promissory Note [Member] | Unsecured Debt [Member]      
Debt Instrument [Line Items]      
Stated percentage 7.50%    
Long-term debt, gross $ 75,000 75,000  
Less unamortized discount     $ 21,700
Wells Fargo Note | Notes Payable to Banks      
Debt Instrument [Line Items]      
Long-term debt, gross $ 8,596 9,176  
Term Loan B | Senior Credit Facility | Medium-term Notes [Member]      
Debt Instrument [Line Items]      
Principal payments (as a percent) 0.25%    
Long-term debt, gross $ 245,187 272,937  
Term Loan A | Senior Credit Facility | Medium-term Notes [Member]      
Debt Instrument [Line Items]      
Long-term debt, gross 215,000 240,000  
Revolving Credit Facility | Senior Credit Facility | Line of Credit [Member]      
Debt Instrument [Line Items]      
Long-term debt, gross $ 55,000 $ 0  
London Interbank Offered Rate (LIBOR) [Member] | Wells Fargo Note | Notes Payable to Banks      
Debt Instrument [Line Items]      
Basis spread on variable rate (as a percent) 2.25%    
London Interbank Offered Rate (LIBOR) [Member] | Term Loan B | Senior Credit Facility | Medium-term Notes [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate (as a percent) 3.00%    
Minimum      
Debt Instrument [Line Items]      
Interest coverage ratio 2.50    
Minimum | London Interbank Offered Rate (LIBOR) [Member] | Term Loan A | Senior Credit Facility | Medium-term Notes [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate (as a percent) 2.00%    
Minimum | London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility | Senior Credit Facility | Line of Credit [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate (as a percent) 2.00%    
Maximum      
Debt Instrument [Line Items]      
Total leverage ratio 5.95    
Senior leverage ratio 3.00    
Maximum | London Interbank Offered Rate (LIBOR) [Member] | Term Loan A | Senior Credit Facility | Medium-term Notes [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate (as a percent) 3.00%    
Maximum | London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility | Senior Credit Facility | Line of Credit [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate (as a percent) 3.00%