Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating Activities:
Net income	$ 3,127	$ 26,794
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	9,894	7,770
Amortization	345	658
Gain on sale of discontinued operations, net of tax		(8,563)
Stock-based compensation	2,262	2,865
Bad debt expense	31	616
Deferred income tax expense (benefit)	8,652	(2,682)
Gain on amended supply agreement	(1,522)	(1,014)
Cash received from amended supply agreement	2,333	10,000
Changes in operating assets and liabilities:
Accounts receivable, net	(5,837)	(11,598)
Costs and billings in excess of estimated earnings on uncompleted contracts	5,598	(16,658)
Inventories	(3,809)	347
Prepaid expenses and other current assets	2,075	335
Accounts payable and income taxes payable	308	(16,650)
Accrued liabilities	(4,336)	(8,769)
Other, net	(533)	1,936
Net cash provided by (used in) operating activities	18,588	(14,613)
Investing Activities:
Proceeds from sale of property, plant and equipment	51	118
Proceeds from sale of Transdyn		14,819
Purchases of property, plant and equipment	(34,246)	(11,296)
Net cash provided by (used in) investing activities	(34,195)	3,641
Financing Activities:
Payments on industrial development revenue bonds	(400)	(400)
Cash paid for employee taxes in lieu of shares	(557)	(451)
Purchase of treasury shares	(12,523)
Dividends paid	(9,326)	(8,995)
Payments on short-term and other financing		(16)
Net cash used in financing activities	(22,806)	(9,862)
Net decrease in cash and cash equivalents	(38,413)	(20,834)
Effect of exchange rate changes on cash and cash equivalents	(1,346)	1,186
Cash and cash equivalents, beginning of period	103,118	107,411
Cash and cash equivalents, end of period	$ 63,359	$ 87,763