CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Operating Activities:
Net income	$ 85,078	$ 70,636	$ 55,686
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	22,341	14,469	15,586
Deferred income taxes	4,048	(164)	3,346
Provision for doubtful accounts		(3,889)	3,038
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable	4,219	28,565	36,211
Inventories	(3,760)	16,638	(4,275)
Prepaid expenses and other current assets	5,516	4,401	5,141
Accounts payable and other current liabilities	(3,387)	(27,498)	14,175
Customer advances	45,517	20,672	48,663
Income taxes	(24,205)	(14,614)	(2,890)
Other items - net	(2,779)	2,507	1,352
NET CASH PROVIDED BY OPERATING ACTIVITIES	132,588	111,723	176,033
Investing Activities:
Acquisition of businesses, net of cash acquired	(126,825)	(8,250)	(19,965)
Consolidation of variable interest entity		38,264
Proceeds from sale of short-term investments	58,252	82,992
Purchases of short-term investments		(158,946)	(8,127)
Purchases of property, plant and equipment	(8,728)	(6,878)	(5,332)
Other items - net			41
NET CASH USED IN INVESTING ACTIVITIES	(77,301)	(52,818)	(33,383)
Financing Activities:
Principal payments on long-term debt	(4,555)	(4,541)	(5,970)
Proceeds from issuance of common stock		44	45
Purchases of treasury stock	(4)	(3)
Dividends paid to shareholders	(7,486)	(4,812)	(4,811)
NET CASH USED IN FINANCING ACTIVITIES	(12,045)	(9,312)	(10,736)
Effect of exchange rates on cash	(9,528)	1,767	(536)
NET INCREASE IN CASH AND CASH EQUIVALENTS	33,714	51,360	131,378
Cash and cash equivalents at the beginning of the year	295,434	244,074	112,696
CASH AND CASH EQUIVALENTS AT THE END OF THE YEAR	$ 329,148	$ 295,434	$ 244,074