Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net Income	$ 28,350	$ 24,555	$ 123,785	$ 102,120
Defined Benefit Pension and Postretirement Benefit Plans:
Amortization of loss, before tax	143	170	430	510
Amortization of prior service credit, before tax	(45)	(45)	(135)	(136)
Total Other Comprehensive Income, Before Tax	98	125	295	374
Tax Attributes of Items in Other Comprehensive Income:
Amortization of loss, tax	(34)	(39)	(101)	(119)
Amortization of prior service credit, tax	11	11	32	32
Total Tax Expense	(23)	(28)	(69)	(87)
Other Comprehensive Income, Net of Tax	75	97	226	287
Comprehensive Income	$ 28,425	$ 24,652	$ 124,011	$ 102,407