Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net Income	$ 30,655	$ 37,079
Defined Benefit Pension and Postretirement Benefit Plans:
Amortization of loss, before tax	100	168
Amortization of prior service credit, before tax	(45)	(45)
Total Other Comprehensive Income, Before Tax	55	123
Tax Attributes of Items in Other Comprehensive Income:
Amortization of loss, tax	(23)	(39)
Amortization of prior service credit, tax	10	10
Total Tax Expense	(13)	(29)
Other Comprehensive Income, Net of Tax	42	94
Comprehensive Income	$ 30,697	$ 37,173