CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income (loss)	$ (21,751)	$ (10,190)	$ 5,020
Other comprehensive income (loss), net of tax:
Pension and postretirement	32,029	39,624	(19,569)
Foreign currency translation adjustment	(1,900)	2,205	(7,001)
Other comprehensive income (loss)	30,129	41,829	(26,570)
Comprehensive income (loss)	$ 8,378	$ 31,639	$ (21,550)