CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income (loss)	$ 9,745	$ (21,751)	$ (10,190)
Other comprehensive income (loss), net of tax:
Pension and postretirement	(34,453)	32,029	39,624
Foreign currency translation adjustment	(3,620)	(1,900)	2,205
Other comprehensive income (loss)	(38,073)	30,129	41,829
Comprehensive income (loss)	$ (28,328)	$ 8,378	$ 31,639