CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 32,884	$ 12,979
Other comprehensive income:
Unrealized gain on pension plan obligation	432	319
Tax effect of unrealized gain on pension plan obligation	(195)	(75)
Unrealized gain on captive insurance collateral	46	932
Tax effect of unrealized gain on captive insurance collateral	(9)	(202)
Unrealized loss on interest rate hedges	(633)	(1,042)
Tax effect of unrealized loss on interest rate hedges	167	285
Total other comprehensive income	740	217
Total comprehensive income	$ 33,624	$ 13,196