CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income (loss)	$ (2,562)	$ (934)
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation	10,597	10,191
Amortization	245	251
Pension and post-retirement expense - U.S. and U.K.	11,714	9,570
Change in long-term obligations		25
Stock compensation expense	1,225	894
Excess tax expense from restricted stock vesting		149
Deferred revenue	(6,238)	14,819
Deferred income taxes	3,259	3,851
Loss on disposition of property	431	192
Change in assets and liabilities:
Restricted cash	5,023	(9,200)
Accounts receivable	(4,596)	6,706
Inventories	(7,653)	(3,352)
Other assets	(833)	(713)
Accounts payable and accrued expenses	12,369	(3,786)
Income taxes	(5,972)	(3,314)
Accrued pension and postretirement benefits	(5,780)	(6,953)
Net cash provided by operating activities	11,229	18,396
Cash flows from investing activities:
Additions to property, plant and equipment	(9,780)	(13,688)
Net cash used in investing activities	(9,780)	(13,688)
Cash flows from financing activities:
Dividends paid	(5,505)	(5,492)
Payment for purchase of treasury stock	(266)	(289)
Excess tax expense from restricted stock vesting		(149)
Payment on long-term obligation	(83)	(24)
Net cash used in financing activities	(5,854)	(5,954)
Effect of exchange rates on cash	(527)	(8)
Increase (decrease) in cash and cash equivalents:	(4,932)	(1,254)
Cash and cash equivalents:
Beginning of period	59,297	49,045
End of period	54,365	47,791
Supplemental disclosures of cash flow information:
Interest (net of capitalized interest)	376	245
Income taxes paid (refunded), net	2,830	(443)
Capital expenditures incurred but not yet paid	$ 1,035	$ 3,050