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Debt - Summary of long-term debt (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Jun. 30, 2013
Debt Instrument [Line Items]    
Capitalized lease obligations $ 110 $ 132
Long-term debt and capital lease obligations, gross 334,110 334,132
Unamortized imputed interest and debt discount (2,144) (2,528)
Long-term debt and capital lease obligations, net 331,966 331,604
Less: current maturities (72) (64)
Long-term debt 331,894 331,540
9.25% senior notes
   
Debt Instrument [Line Items]    
Long-term debt, gross 300,000 300,000
Term Notes | Mayflower
   
Debt Instrument [Line Items]    
Long-term debt, gross 24,000 24,000
Term Notes | BFI
   
Debt Instrument [Line Items]    
Long-term debt, gross $ 100,000 $ 10,000