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Asset-Based Credit Facility and Senior Notes Payable - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Aug. 09, 2016
Oct. 09, 2015
Dec. 31, 2015
Sep. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Sep. 23, 2016
Debt Instrument [Line Items]              
Redemption price, percentage         108.25%    
Loss on extinguishment of debt     $ 0   $ 0 $ 5,354,000  
Senior Notes              
Debt Instrument [Line Items]              
Revolving asset-based credit facility         3,164,000 4,182,000  
Senior Notes | Senior Secured Notes Due 2021              
Debt Instrument [Line Items]              
Debt instrument, face amount $ 575,000,000            
Interest rate, stated percentage 8.25%            
Percentage of principal amount of notes 100.00%            
Revolving asset-based credit facility         40,621,000 49,513,000  
Senior Notes | Senior Secured Notes Due 2021 | Debt Instrument, Redemption, Period One              
Debt Instrument [Line Items]              
Redemption price, percentage 40.00%            
Senior Notes | Senior Secured Notes Due 2021 | Debt Instrument, Redemption, Period Two              
Debt Instrument [Line Items]              
Redemption price, percentage 108.25%            
Senior Notes | Senior Secured Notes Due 2021 | Debt Instrument, Redemption, Due Before August 15, 2018              
Debt Instrument [Line Items]              
Redemption price, percentage 100.00%            
Senior Notes | Senior Secured Notes Due 2021 | Debt Instrument, Change of Control, Period              
Debt Instrument [Line Items]              
Redemption price, percentage 101.00%            
Revolving Credit Facility | Line of Credit              
Debt Instrument [Line Items]              
Maximum borrowing capacity $ 250,000,000           $ 300,000,000
Commitment fee percentage 0.25%            
Periodic payment       $ 75,000      
Loss on extinguishment of debt   $ 7,000,000          
Additional borrowing capacity             $ 50,000,000
Amount outstanding           47,500,000  
Revolving asset-based credit facility         0 34,400,000  
Unamortized debt issuance costs         43,800,000 53,700,000  
Revolving Credit Facility | Line of Credit | Minimum              
Debt Instrument [Line Items]              
Commitment fee percentage 0.25%            
Revolving Credit Facility | Line of Credit | Maximum              
Debt Instrument [Line Items]              
Commitment fee percentage 0.375%            
Revolving Credit Facility | Line of Credit | Eurodollar              
Debt Instrument [Line Items]              
Basis spread on variable rate       1.50%      
Fronting fee percentage       0.125%      
Revolving Credit Facility | Line of Credit | Eurodollar | Minimum              
Debt Instrument [Line Items]              
Basis spread on variable rate 1.25%            
Revolving Credit Facility | Line of Credit | Eurodollar | Maximum              
Debt Instrument [Line Items]              
Basis spread on variable rate 1.75%            
Revolving Credit Facility | Line of Credit | Base Rate | Minimum              
Debt Instrument [Line Items]              
Basis spread on variable rate 0.25%            
Revolving Credit Facility | Line of Credit | Base Rate | Maximum              
Debt Instrument [Line Items]              
Basis spread on variable rate 0.75%            
Letter of Credit | Line of Credit              
Debt Instrument [Line Items]              
Maximum borrowing capacity $ 75,000,000            
Notes Payable, Noncurrent | Line of Credit              
Debt Instrument [Line Items]              
Revolving asset-based credit facility         40,600,000 49,500,000  
Other Long-term Assets | Revolving Credit Facility | Line of Credit              
Debt Instrument [Line Items]              
Revolving asset-based credit facility         $ 3,200,000 $ 4,200,000