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Fair Value Measurements (Tables)
9 Months Ended
Mar. 31, 2016
Fair Value Measurements [Abstract]  
Fair Value, by Balance Sheet Grouping
    March 31,   June 30,
(Amounts in thousands)   2016   2015
7 3/8% Senior Notes due March 2021 (Level 2) $ 218,750 $ 284,375
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
(Amounts in thousands)   March 31, 2016   June 30, 2015
     Asset   Liability    Asset    Liability
Level 2 $ 694 $ 2,354 $ 767 $ 757
Total $ 694 $ 2,354 $ 767 $ 757