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Additional Debt (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Apr. 30, 2014
Apr. 01, 2014
Debt Instrument [Line Items]          
Long-term debt, current maturities $ 100,000 $ 50,000      
Debt discount       $ 2,300  
Debt Issuance Cost 0 0 $ 20,747    
Amortization of debt issuance costs 3,947 3,344 $ 5,848    
Debt Instrument, Fee Amount       3,951  
Long-term Debt, Gross $ 593,850 668,850   820,000  
Senior unsecured notes [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage         6.00%
Debt Instrument, Redemption Price, Percentage 100.00%        
Minimum redemption price on or after April 1, 2017 100.00%        
Maximum redemption price on or after April 1, 2017 104.50%        
Redemption price, change of control 101.00%        
Event of default percentage 25.00%        
Long-term Debt, Gross $ 360,000 360,000      
ABL Facility [Member]          
Debt Instrument [Line Items]          
Maximum Borrowing Capacity 75,000        
Current Borrowing Capacity 60,019        
Additional borrowing capacity that may be increased by under ABL 35,000        
Letters of credit maximum borrowing capacity 35,000        
Swingline loans available $ 20,000        
Line of Credit Facility, Commitment Fee Percentage 0.33%        
Long-term Line of Credit $ 0        
Senior secured term loan [Member]          
Debt Instrument [Line Items]          
Increased borrowing capacity under certain conditions $ 225,000        
Debt Instrument, Interest Rate, Stated Percentage 3.52%        
Repayments of Debt $ 75,000 100,000      
Prepayment % of annual excess cash flow 50.00%        
Prepayment % for asset sales and casualty events 100.00%        
Long-term Debt, Gross $ 233,850 $ 308,850   $ 460,000