Pension and Other Postretirement Benefits (Details 4) (Other Postretirement Benefit Plan, Defined Benefit [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Other Postretirement Benefit Plan, Defined Benefit [Member]
Change in Benefit Obligation
Benefit Obligation, Beginning of Year	$ 21,422	$ 24,574
Service Cost	55	72	75
Interest Cost	1,006	938	1,029
Actuarial Losses (Gains)	3,658	(907)
Benefits Paid	(1,665)	(3,255)
Benefit Obligation, End of Year	24,476	21,422	24,574
Funded Status of Plans	(24,476)	(21,422)
Amounts Recognized in Balance Sheet
Short-term Accrued Benefit Obligation	(1,960)	(1,961)
Accrued Postretirement Benefits	(22,516)	(19,461)
Net Amount Recognized	$ (24,476)	$ (21,422)