v3.3.1.900
Senior Secured Notes Narrative and Redemption Schedule (Details) - USD ($)
1 Months Ended 9 Months Ended
Jan. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
May. 05, 2015
Mar. 31, 2015
Jan. 20, 2015
Sep. 08, 2014
Feb. 28, 2014
Oct. 02, 2013
Jun. 30, 2011
Dec. 31, 2010
Debt Redemption Percentage                      
Paid-in-Kind Interest   $ 0 $ 4,809,000                
Second Lien Notes                      
Debt Redemption Percentage                      
Interest rate per annum                 10.00%    
Debt Instrument, Exchange Amount                 $ 94,300,000    
Senior Secured Notes                      
Debt Redemption Percentage                      
Debt Instrument, Face Amount   308,306,000     $ 309,569,000            
Senior Secured Notes | First Lien Notes                      
Debt Redemption Percentage                      
Debt Instrument, Face Amount   $ 273,175,000     275,175,000           $ 385,000,000.0
Interest rate per annum                     11.50%
Debt Instrument, Repurchased Face Amount       $ 2,000,000 55,500,000     $ 2,300,000   $ 20,000,000  
Redemption price   105.90%                  
Debt Instrument, Exchange Amount           $ 32,000,000          
Senior Secured Notes | First Lien Notes | 2015 [Member]                      
Debt Redemption Percentage                      
Redemption price     102.875%                
Senior Secured Notes | First Lien Notes | 2016 and thereafter [Member]                      
Debt Redemption Percentage                      
Redemption price     100.00%                
Senior Secured Notes | Second Lien Notes                      
Debt Redemption Percentage                      
Debt Instrument, Face Amount   $ 2,198,000     2,198,000           $ 104,900,000.0
Interest rate per annum                     13.50%
Debt Instrument, Repurchased Face Amount         600,000            
Debt Instrument, Exchange Amount             $ 7,800,000        
Senior Secured Notes | Second Lien Notes | 2015 [Member]                      
Debt Redemption Percentage                      
Redemption price     103.375%                
Senior Secured Notes | Second Lien Notes | 2016 and thereafter [Member]                      
Debt Redemption Percentage                      
Redemption price     100.00%                
Senior Secured Notes | New Second Lien Notes                      
Debt Redemption Percentage                      
Debt Instrument, Face Amount   $ 39,024,000     $ 39,024,000            
Interest rate per annum           7.00%          
Redemption price 107.00%                    
Debt Instrument, Exchange Amount           $ 39,000,000          
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed 35.00%                    
Debt Instrument, Redemption Price, Percentage of Principal Amount Not Redeemed 65.00%                    
Senior Secured Notes | New Second Lien Notes | 2018 [Member]                      
Debt Redemption Percentage                      
Redemption price     107.00%                
Senior Secured Notes | New Second Lien Notes | 2019 [Member]                      
Debt Redemption Percentage                      
Redemption price     103.50%                
Senior Secured Notes | New Second Lien Notes | 2020 and thereafter [Member]                      
Debt Redemption Percentage                      
Redemption price     100.00%