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Debt Secured Notes (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Secured Notes Due in 2016 - New [Member]
Dec. 31, 2013
Secured Notes Due in 2016 - New [Member]
Dec. 31, 2012
Secured Notes Due in 2016 - New [Member]
Jun. 12, 2012
Secured Notes Due in 2016 - New [Member]
Jun. 12, 2012
Secured Notes Due in 2016 - Old [Member]
Dec. 31, 2011
Secured Notes Due in 2016 - Old [Member]
Dec. 31, 2013
Senior Secured Notes Due in 2016 [Member]
Dec. 31, 2012
Senior Secured Notes Due in 2016 [Member]
Dec. 31, 2013
Redemption Date Range prior to 12/15/14
Secured Notes Due in 2016 - New [Member]
Dec. 31, 2013
Redemption Date Range 12/15/14 - 12/14/15 [Member]
Secured Notes Due in 2016 - New [Member]
Dec. 31, 2013
Redemption Date Range after 12/14/15 [Member]
Secured Notes Due in 2016 - New [Member]
Dec. 31, 2013
Minimum
Debt Instrument [Line Items]                                
Period Of Trading Days                               20 days
Aggregate principal amount of Senior Secured Notes issued   $ 210,000 $ 225,000         $ 225,000 $ 225,000 $ 225,000            
Stated interest rate on debt         12.75% 12.75%   12.75% 12.75%              
Interest Paid   33,266 34,051 7,234             28,548 28,688        
Maturity date           Dec. 15, 2016                    
Date of redemption           On or after December 15, 2014                    
Redemption percentage after disclosed date                         112.75% 106.375% 100.00%  
Maximum redemption of secured notes, states as a percentage                         35.00%      
Redemption price stated as a percentage of principal           101.00%                    
Redemption price on principal amount, percentage, upon certain asset sales           100.00%                    
Offer to purchase secured notes with certain of its excess cash flow           95 days                    
Requirement to purchase secured notes with excess cash flows as a percentage of outstanding principal           103.00%                    
Excess Cash Flow Per Senior Secured Note Agreement         0 0 17,000                  
Secured Notes Purchased with Excess Cash Flow 0                              
Extinguishment of Debt, Amount         15,000                      
Gains (Losses) on Extinguishment of Debt   $ (2,606) $ 0 $ (6,153)   $ (2,606)