CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 22,287	$ 23,486
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	51,879	51,901
Stock-based compensation	8,432	8,303
Provision for losses on accounts receivable	350	121
Amortization of debt discounts and issuance costs	5,271	4,894
Deferred income taxes	1,249	1,111
Gain on sale of assets and investments	(240)	(317)
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	(18,437)	14,977
(Increase) decrease in inventories	14,632	(36,483)
(Increase) decrease in prepaid and other assets	1,866	(596)
Decrease in accounts payable, accrued liabilities and income taxes payable	(32,827)	(39,864)
Other changes, net	3,093	2,053
Net cash provided by operating activities	57,555	29,586
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(63,247)	(55,365)
Acquired businesses, net of cash acquired	(4,470)	(2,225)
Proceeds from sale of assets	914	275
Investment sales	715	8,891
Net cash used in investing activities	(66,088)	(48,424)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock	0	371
Dividends paid	(6,686)	(5,807)
Purchase of shares for treasury	(50,771)	(58,218)
Proceeds from long-term debt	263,249	121,523
Payments of long-term debt	(177,973)	(80,495)
Change in short-term borrowings	(45)	(81)
Financing costs	(4,135)	(592)
Tax benefit from exercise/vesting of equity awards, net	2,291	345
Other, net	(86)	206
Net cash provided by (used in) financing activities	25,844	(22,748)
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in operating activities	(1,152)	(830)
Net cash used in discontinued operations	(1,152)	(830)
Effect of exchange rate changes on cash and equivalents	456	(4,034)
NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS	16,615	(46,450)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	52,001	92,405
CASH AND EQUIVALENTS AT END OF PERIOD	$ 68,616	$ 45,955