Summary Of Significant Accounting Policies (Schedule Of Amounts Reclassified Out of Accumulated Other Comprehensive Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2014		Dec. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss at beginning of period	$ (7,998)		$ (8,324)		$ (8,061)		$ (8,391)
Total other comprehensive income, before tax	99		107		198		214
Total tax expense	(37)		(39)		(73)		(79)
Other comprehensive income, net of tax	62		68		125		135
Accumulated other comprehensive loss at end of period	(7,936)		(8,256)		(7,936)		(8,256)
Pension Benefits [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of unrecognized net (gain) loss	107	[1]	115	[1]	214	[1]	230	[1]
Postretirement Benefits [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of unrecognized net (gain) loss	(7)	[1]	(7)	[1]	(14)	[1]	(14)	[1]
Amortization of prior service asset	$ (1)	[1]	$ (1)	[1]	$ (2)	[1]	$ (2)	[1]

[1] Included in the computation of net periodic benefit income/cost. See Notes 6 and 7 for additional information.