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Long-term Debt - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 17, 2014
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Debt Instrument [Line Items]            
Losses on Extinguishment of Debt   $ 0 $ 0 $ 0 $ 4,132  
Revolving Credit Facility [Member]            
Debt Instrument [Line Items]            
Line of Credit Facility, Maximum Borrowing Capacity   $ 350,000   $ 350,000    
Term Loan Facility [Member]            
Debt Instrument [Line Items]            
Payments of Financing Costs         2,400  
Write-off of Unamortized Debt Discount and Debt Issuance Costs         1,700  
Losses on Extinguishment of Debt         $ 4,100  
7.50% Senior Notes [Member]            
Debt Instrument [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage   7.50%   7.50%   7.50%
London Interbank Offered Rate (LIBOR) [Member] | Term Loan Facility [Member]            
Debt Instrument [Line Items]            
Debt Instrument, Basis Spread on Variable Rate 4.00%     3.25%    
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum 1.00%     1.00%    
Base Rate [Member] | Term Loan Facility [Member]            
Debt Instrument [Line Items]            
Debt Instrument, Basis Spread on Variable Rate 3.00%     2.25%