Summary Of Significant Accounting Policies (Schedule Of Amounts Reclassified Out Of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands		3 Months Ended
		Sep. 30, 2015	Sep. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss at beginning of period		$ (10,057)	$ (8,061)
Total other comprehensive income, before tax		130	99
Total tax expense		(49)	(36)
Other comprehensive income, net of tax		81	63
Accumulated other comprehensive loss at end of period		(9,976)	(7,998)
Pension Benefits [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of unrecognized net (gain) loss	[1]	135	107
Postretirement Benefits [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of unrecognized net (gain) loss	[1]	(4)	(7)
Amortization of prior service asset	[1]	$ (1)	$ (1)

[1] Included in the computation of net periodic benefit income/cost. See Notes 9 and 10 for additional information.