CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income (loss)	$ (672)	$ 228
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation	5,262	5,114
Amortization	123	126
Pension and post-retirement expense - U.S. and U.K.	5,859	4,786
Change in long-term obligations		14
Stock compensation expense	558	584
Excess tax expense from restricted stock vesting		114
Deferred revenue	(5,205)	15,444
Deferred income taxes	729	4,075
Loss on disposition of property	254	11
Change in assets and liabilities:
Restricted cash	3,523	(9,200)
Accounts receivable	7,648	10,492
Inventories	(6,973)	(10,657)
Other assets	(1,041)	(1,236)
Accounts payable and accrued expenses	8,938	(3,516)
Income taxes	(2,705)	(2,676)
Accrued pension and postretirement benefits	(2,829)	(3,558)
Net cash provided by operating activities	13,469	10,145
Cash flows from investing activities:
Additions to property, plant and equipment	(5,893)	(7,051)
Net cash used in investing activities	(5,893)	(7,051)
Cash flows from financing activities:
Dividends paid	(2,752)	(2,746)
Payment for purchase of treasury stock	(266)	(289)
Excess tax expense from restricted stock vesting		(114)
Payment on long-term obligation	(55)	(12)
Net cash used in financing activities	(3,073)	(3,161)
Effect of exchange rates on cash	(839)	(720)
Increase (decrease) in cash and cash equivalents:	3,664	(787)
Cash and cash equivalents:
Beginning of period	59,297	49,045
End of period	62,961	48,258
Supplemental disclosures of cash flow information:
Interest (net of capitalized interest)	155	122
Income taxes paid (refunded), net	1,836	(796)
Capital expenditures incurred but not yet paid	$ 991	$ 2,346