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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 97,145	$ (51,362)
Other comprehensive income, net of income taxes:
Net change related to employee benefit plans, net of income taxes of $(0.1) million for the three months ended December 31, 2022 and 2021	256	394
Other comprehensive income	256	394
Comprehensive income (loss)	$ 97,401	$ (50,968)

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