Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Statement of Other Comprehensive Income [Abstract]
Net Income	$ 24,801	$ 26,662
Defined Benefit Pension and Postretirement Benefit Plans:
Amortization of loss, before tax	108	167
Amortization of prior service asset, before tax	(1)	(1)
Total Other Comprehensive Income, Before Tax	107	166
Tax Attributes of Items in Other Comprehensive Income:
Amortization of loss, tax	(40)	(62)
Amortization of prior service asset, tax	0	0
Total Tax Expense	(40)	(62)
Other comprehensive income, net of tax	67	104
Comprehensive Income	$ 24,868	$ 26,766