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Debt 7.5% Notes Redemption (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Debt Instrument, Redemption [Line Items]        
Loss on early extinguishment of debt $ 3,272 $ (3,272) $ 0 $ (763)
Long-term Debt [Member] | Senior secured notes due June 01, 2021 [Member]
       
Debt Instrument, Redemption [Line Items]        
Debt Redemptions Rights After Change Of Control   101.00%    
Long-term Debt [Member] | Senior secured notes due June 01, 2021 [Member] | Debt Instrument, Redemption, Period One [Member]
       
Debt Instrument, Redemption [Line Items]        
Debt Instrument, Redemption Price, Percentage   100.00%    
Long-term Debt [Member] | Senior secured notes due June 01, 2021 [Member] | Debt Instrument, Redemption, Period Two [Member]
       
Debt Instrument, Redemption [Line Items]        
Debt Instrument, Redemption Price, Percentage   105.625%    
Long-term Debt [Member] | Senior secured notes due June 01, 2021 [Member] | Debt Instrument, Redemption, Period Three [Member]
       
Debt Instrument, Redemption [Line Items]        
Debt Instrument, Redemption Price, Percentage   103.75%    
Long-term Debt [Member] | Senior secured notes due June 01, 2021 [Member] | Debt Instrument, Redemption, Period Four [Member]
       
Debt Instrument, Redemption [Line Items]        
Debt Instrument, Redemption Price, Percentage   101.875%    
Long-term Debt [Member] | Senior secured notes due June 01, 2021 [Member] | Debt Instrument, Redemption, Period Five [Member]
       
Debt Instrument, Redemption [Line Items]        
Debt Instrument, Redemption Price, Percentage   100.00%