CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ (24,594)	$ (2,562)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	11,449	10,597
Amortization	264	245
Pension and post-retirement expense - U.S. and U.K.	7,107	11,714
Stock compensation expense	1,317	1,225
Deferred revenue	(1,250)	(6,238)
Deferred income taxes	27,858	3,259
Loss on disposition of property	55	431
Change in assets and liabilities:
Restricted cash		5,023
Accounts receivable	(2,925)	(4,596)
Inventories	(21,548)	(7,653)
Other assets	(1,184)	(833)
Accounts payable and accrued expenses	2,385	12,369
Income taxes	(11,066)	(5,972)
Accrued pension and postretirement benefits	(4,905)	(5,780)
Net cash provided by (used in) operating activities	(17,037)	11,229
Cash flows from investing activities:
Additions to property, plant and equipment	(6,338)	(9,780)
Net cash provided by (used in) investing activities	(6,338)	(9,780)
Cash flows from financing activities:
Dividends paid	(5,509)	(5,505)
Payment for purchase of treasury stock	(223)	(266)
Payment on long-term obligation	(109)	(83)
Net cash provided by (used in) financing activities	(5,841)	(5,854)
Effect of exchange rates on cash	422	(527)
Increase (decrease) in cash and cash equivalents:	(28,794)	(4,932)
Cash and cash equivalents:
Beginning of period	46,328	59,297
End of period	17,534	54,365
Supplemental disclosures of cash flow information:
Interest (net of capitalized interest)	430	376
Income taxes paid (refunded), net	918	2,830
Capital expenditures incurred, but not yet paid	$ 1,738	$ 1,035