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Debt - Summary of long-term debt (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Jun. 30, 2013
Debt Instrument [Line Items]    
Capitalized lease obligations $ 94 $ 132
Long-term debt and capital lease obligations, gross 290,094 334,132
Unamortized debt discount (703) (2,528)
Long-term debt and capital lease obligations, net 289,391 331,604
Less: current maturities (2,969) (64)
Long-term debt 286,422 331,540
Term B Loans
   
Debt Instrument [Line Items]    
Long-term debt, gross 290,000   
Senior notes
   
Debt Instrument [Line Items]    
Long-term debt, gross    300,000
Term loan payable | Mayflower
   
Debt Instrument [Line Items]    
Long-term debt, gross    24,000
Term loan payable | BFI
   
Debt Instrument [Line Items]    
Long-term debt, gross    $ 10,000