CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Operating Activities:
Net income	$ 1,735	$ 22,914	$ 69,580
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	45,478	37,662	30,440
Share-based compensation expense	8,762	8,325	5,625
Change in fair value of contingent consideration	1,274	3,607
Inventory write-down			598
Deferred income taxes	(23,988)	33,816	2,684
Net pension cost (benefit)	1,102	(3,224)	(1,626)
Excess tax benefits from equity incentive plans	3	33	(310)
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable	4,409	(2,230)	(4,300)
Inventories	(62)	(21,669)	20,590
Prepaid expenses and other current assets	3,403	(15,045)	(6,488)
Long-term capitalized contract costs	7,635	3,192	(7,246)
Accounts payable and other current liabilities	19,874	25,599	6,505
Customer advances	(24,900)	(10,200)	7,304
Income taxes	(5,519)	8,847	(9,768)
Other items, net	5,396	(1,938)	1,222
NET CASH PROVIDED BY OPERATING ACTIVITIES	44,602	89,689	114,810
Investing Activities:
Acquisition of businesses, net of cash acquired	(243,459)	(92,178)	(83,456)
Purchases of marketable securities	(28,470)	(58,855)	(25,557)
Proceeds from sales or maturities of marketable securities	43,456	51,173	4,050
Purchases of property, plant and equipment	(32,093)	(22,202)	(16,620)
Purchases of other assets		(2,993)
NET CASH USED IN INVESTING ACTIVITIES	(260,566)	(125,055)	(121,583)
Financing Activities:
Proceeds from short-term borrowings	288,900	111,300	38,000
Principal payments on short-term borrowings	(108,900)	(51,300)	(38,000)
Proceeds from long-term borrowings	75,000	25,000
Principal payments on long-term debt	(494)	(537)	(573)
Deferred financing fees	(3,647)
Proceeds from issuance of common stock			113
Purchase of common stock	(1,563)	(2,652)	(1,204)
Dividends paid	(7,285)	(7,256)	(6,429)
Excess tax benefits from equity incentive plans	(3)	(33)	310
Contingent consideration payments related to acquisitions of businesses	(2,479)		(2,368)
Purchase of noncontrolling interest		(1,029)
Net change in restricted cash	(6,403)	(189)	325
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	233,126	73,304	(9,826)
Effect of exchange rates on cash	(38,511)	(10,950)	4,195
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(21,349)	26,988	(12,404)
Cash and cash equivalents at the beginning of the period	218,476	191,488	203,892
CASH AND CASH EQUIVALENTS AT THE END OF THE PERIOD	197,127	218,476	191,488
GATR
Operating Activities:
Net income	(23,000)
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Change in fair value of contingent consideration	700
Supplemental disclosure of non-cash investing and financing activities:
Liability incurred to acquire, net	6,788
TeraLogics
Operating Activities:
Net income	(1,700)
Supplemental disclosure of non-cash investing and financing activities:
Liability incurred to acquire, net	4,998
H4 Global
Operating Activities:
Net income	400
Supplemental disclosure of non-cash investing and financing activities:
Liability incurred to acquire, net	952
DTECH
Operating Activities:
Net income	2,100	500
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Change in fair value of contingent consideration	(500)	3,600
Supplemental disclosure of non-cash investing and financing activities:
Liability incurred to acquire, net		11,808
Intific
Operating Activities:
Net income	$ (800)	$ (1,800)
Supplemental disclosure of non-cash investing and financing activities:
Liability incurred to acquire, net			$ 1,173