Fair Value Measurements (Fair Value, by Balance Sheet Grouping) (Details) - 7 3/8% Senior Notes [Member] - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2016	Jun. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument, stated interest rate	7.375%	7.375%
Debt instrument, maturity	Mar. 01, 2021
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
7 3/8% Senior Notes due March 2021	$ 218,750	$ 284,375