CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income (loss)	$ 41,975	$ 45,087	$ (8,683)
Other comprehensive income (loss), net of tax:
Pension and postretirement	10,736	13,066	59,006
Foreign currency translation adjustment	6,729	(11,817)	3,254
Other comprehensive income (loss)	17,465	1,249	62,260
Comprehensive income	$ 59,440	$ 46,336	$ 53,577