CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 17,309	$ 16,883
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	37,173	34,202
Stock-based compensation	4,795	5,555
Provision for losses on accounts receivable	(18)	(13)
Amortization of debt discounts and issuance costs	2,919	3,384
Deferred income taxes	(236)	1,537
Gain on sale of assets and investments	(111)	(255)
Change in assets and liabilities, net of assets and liabilities acquired:
Increase in accounts receivable and contract costs and recognized income not yet billed	(11,567)	(43,751)
(Increase) decrease in inventories	(7,535)	17,617
Decrease in prepaid and other assets	2,283	2,220
Decrease in accounts payable, accrued liabilities and income taxes payable	(37,084)	(42,632)
Other changes, net	843	2,037
Net cash provided by (used in) operating activities	8,771	(3,216)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(42,513)	(45,952)
Acquired businesses, net of cash acquired	(6,051)	(1,744)
Acquired businesses, net of cash acquired	0	(2,726)
Proceeds from sale of assets	140	868
Investment sales		715
Net cash used in investing activities	(48,424)	(48,839)
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividends paid	(5,137)	(4,508)
Purchase of shares for treasury	(15,759)	(33,640)
Proceeds from long-term debt	195,655	139,604
Payments of long-term debt	(123,264)	(46,323)
Change in short-term borrowings	(488)	(191)
Share premium payment on settled debt	(24,997)	0
Financing costs	(335)	(1,120)
Purchase of ESOP shares	9,213	0
Other, net	(186)	307
Net cash provided by financing activities	16,276	54,129
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in operating activities	(738)	(578)
Net cash used in discontinued operations	(738)	(578)
Effect of exchange rate changes on cash and equivalents	(1,013)	785
NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS	(25,128)	2,281
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	72,553	52,001
CASH AND EQUIVALENTS AT END OF PERIOD	$ 47,425	$ 54,282