CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 30,010	$ 34,289	$ (177)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	70,208	69,800	67,396
Stock-based compensation	10,136	11,110	11,473
Asset impairment charges - restructuring	0	0	191
Provision for losses on accounts receivable	338	84	359
Amortization of deferred financing costs and debt discounts	7,415	6,982	6,427
Loss from debt extinguishment	0	0	38,890
Deferred income taxes	8,082	2,132	(5,131)
(Gain) loss on sale/disposal of assets	(350)	(342)	244
Change in assets and liabilities, net of assets and liabilities acquired:
(Increase) decrease in accounts receivable and contract costs and recognized income not yet billed	(34,296)	32,150	6,009
(Increase) decrease in inventories	20,533	(48,356)	(50,461)
(Increase) decrease in prepaid and other assets	(19,091)	(5,022)	(4,278)
Increase (decrease) in accounts payable, accrued liabilities and income taxes payable	8,950	(27,250)	21,304
Other changes, net	4,002	560	1,055
Net cash provided by operating activities	105,937	76,137	93,301
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(90,759)	(73,620)	(77,094)
Acquired business, net of cash acquired	(4,470)	(2,225)	(62,306)
Investment sales (purchases)	715	8,891	(8,402)
Proceeds from sale of property, plant and equipment	909	334	552
Net cash used in investing activities	(93,605)	(66,620)	(147,250)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock	0	371	584
Dividends paid	(8,798)	(7,654)	(6,273)
Purchase of shares for treasury	(65,307)	(82,343)	(79,614)
Proceeds from issuance of debt	302,362	233,491	691,943
Payments of long-term debt	(214,986)	(187,735)	(603,094)
Change in short-term borrowings	(54)	(365)	(749)
Financing costs	(4,384)	(1,308)	(11,298)
Purchase of ESOP shares	0	0	(20,000)
Tax effect from exercise/vesting of equity awards, net	0	345	273
Other, net	55	347	298
Net cash used in financing activities	8,888	(44,851)	(27,930)
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in operating activities	(1,554)	(918)	(1,528)
Net cash used in discontinued operations	(1,554)	(918)	(1,528)
Effect of exchange rate changes on cash and equivalents	886	(4,152)	(2,318)
NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS	20,552	(40,404)	(85,725)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	52,001	92,405	178,130
CASH AND EQUIVALENTS AT END OF PERIOD	72,553	52,001	92,405
Supplemental Disclosure of Cash Flow Information:
Cash paid for interest	44,305	41,580	60,246
Cash paid for taxes	$ 3,431	$ 16,446	$ 9,626