Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net (Loss) Income	$ (4,483)	$ 28,897	$ 60,542	$ 110,606
Defined Benefit Pension and Postretirement Benefit Plans:
Amortization of loss, before tax	101	167	301	503
Amortization of prior service credit, before tax	(45)	(45)	(136)	(136)
Total Other Comprehensive Income, Before Tax	56	122	165	367
Tax Attributes of Items in Other Comprehensive Income:
Amortization of loss, tax	(24)	(39)	(71)	(117)
Amortization of prior service credit, tax	11	11	32	32
Total Tax Expense	(13)	(28)	(39)	(85)
Other Comprehensive Income, Net of Tax	43	94	126	282
Comprehensive (Loss) Income	$ (4,440)	$ 28,991	$ 60,668	$ 110,888