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Long-Term Debt (Redemptions and Restrictions) (Details) - USD ($)
9 Months Ended
Feb. 19, 2016
Dec. 31, 2016
Mar. 31, 2016
Debt Instrument [Line Items]      
Unamortized discount (premium) and debt issuance costs, net   $ 21,421,000 $ 27,191,000
2012 ABL Revolver | Revolving Credit Facility      
Debt Instrument [Line Items]      
Long-term debt outstanding   0  
Line of credit facility, remaining borrowing capacity   135,000,000.0  
2012 ABL Revolver | Revolving Credit Facility | Other long-term assets      
Debt Instrument [Line Items]      
Unamortized debt costs related to 2012 ABL Revolver   $ 1,000,000 1,300,000
Senior Notes | 2013 Senior Notes      
Debt Instrument [Line Items]      
Debt instrument, redemption price, percentage   101.00%  
Unamortized discount (premium) and debt issuance costs, net   $ 4,800,000 5,400,000
Senior Notes | 2016 Senior Notes      
Debt Instrument [Line Items]      
Unamortized discount (premium) and debt issuance costs, net   5,000,000 5,400,000
Term Loans | 2012 Term Loan      
Debt Instrument [Line Items]      
Unamortized discount (premium) and debt issuance costs, net   $ 11,600,000 $ 16,400,000
Debt Instrument, Redemption, Period One | Senior Notes | 2013 Senior Notes      
Debt Instrument [Line Items]      
Debt instrument, redemption price, percentage   100.00%  
Redemption price, percentage of principal amount, using proceeds of equity offerings   105.375%  
Debt Instrument, Redemption, Period Two | Senior Notes | 2016 Senior Notes      
Debt Instrument [Line Items]      
Debt instrument, redemption price, percentage 100.00%    
Maximum | Debt Instrument, Redemption, Period One | Senior Notes | 2013 Senior Notes      
Debt Instrument [Line Items]      
Redemption price, percentage of principal amount redeemed   35.00%  
Maximum | Debt Instrument, Redemption, Period Two | Senior Notes | 2016 Senior Notes      
Debt Instrument [Line Items]      
Redemption price, percentage of principal amount redeemed 40.00%    
Indirect Guarantee of Indebtedness | Senior Notes | 2016 Senior Notes      
Debt Instrument [Line Items]      
Debt instrument, redemption price, percentage 101.00%