CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 14,691	$ 12,593
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	34,202	34,453
Stock-based compensation	5,555	5,372
Provision for losses on accounts receivable	(13)	242
Amortization of debt discounts and issuance costs	3,384	3,265
Loss from debt extinguishment, net		0
Deferred income taxes	1,537	1,282
Gain on sale of assets and investments	(255)	(315)
Change in assets and liabilities, net of assets and liabilities acquired:
Increase in accounts receivable and contract costs and recognized income not yet billed	(43,751)	(23,424)
Decrease (increase) in inventories	17,617	(39,252)
Decrease in prepaid and other assets	2,220	754
Decrease in accounts payable, accrued liabilities and income taxes payable	(42,632)	(40,244)
Other changes, net	2,037	2,223
Net cash used in operating activities	(5,408)	(43,051)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(45,952)	(39,713)
Acquired businesses, net of cash acquired	(4,470)	0
Proceeds from sale of assets	868	177
Investment sales	715	8,891
Net cash used in investing activities	(48,839)	(30,645)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock	0	285
Dividends paid	(4,508)	(3,911)
Purchase of shares for treasury	(33,640)	(37,577)
Proceeds from long-term debt	139,604	99,556
Payments of long-term debt	(46,323)	(29,425)
Change in short-term borrowings	(191)	(572)
Financing costs	(1,120)	(590)
Tax benefit from exercise/vesting of equity awards, net	2,291	345
Other, net	208	95
Net cash provided by financing activities	56,321	28,206
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in operating activities	(578)	(545)
Net cash used in discontinued operations	(578)	(545)
Effect of exchange rate changes on cash and equivalents	785	(3,768)
NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS	2,281	(49,803)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	52,001	92,405
CASH AND EQUIVALENTS AT END OF PERIOD	$ 54,282	$ 42,602