Consolidated Statements Of Cash Flows (USD $) In Thousands	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Operating Activities
Net income (loss)	$ 22,119	$ 9,563	$ (1,589)
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	2,814	1,763	1,559
Write-down of inventory	1,167	582	327
Provision for (reversal of) allowance for doubtful accounts	139	(56)	(57)
Deferred income taxes	(635)	(1,402)	25
Impairment of long-lived assets	0	610	1,062
Non-cash stock based compensation expense	1,470	987	711
Changes in operating assets and liabilities:
Change in restricted cash	(274)	(4,763)	1,421
Accounts receivable	(21,399)	(11,621)	9,118
Inventories	(14,194)	(12,128)	2,145
Accrued income taxes	7,834	6,549	(760)
Prepaid expenses and other assets	(1,740)	(1,752)	641
Accounts payable	(3,644)	8,436	(2,271)
Accrued liabilities and customer deposits	5,137	12,057	(4,128)
Deferred profit	16,632	6,975	(633)
Net cash provided by (used in) operating activities	15,426	15,800	7,571
Investing Activities
Purchases of property, plant and equipment	(5,183)	(2,929)	(1,148)
Increase in restricted cash - non-current	0	0	645
Investment in acquisitions	(1,055)	0	(645)
Investment in note receivable	0	(1,000)	0
Proceeds from note receivable	0	1,000	0
Payment for licensing agreement	0	0	(800)
Net cash used in investing activities	(6,238)	(2,929)	(1,948)
Financing Activities
Proceeds from issuance of common stock, net	1,330	1,328	3
Purchase of common stock under repurchase program	0	0	(448)
Payments on long-term obligations	(127)	(117)	(145)
Excess tax benefit of stock options	855	202	0
Net cash provided by (used in) financing activities	2,058	1,413	(590)
Effect of Exchange Rate Changes on Cash	(628)	182	(236)
Net Increase in Cash and Cash Equivalents	10,618	14,466	4,797
Cash and Cash Equivalents, Beginning of Year	56,764	42,298	37,501
Cash and Cash Equivalents, End of Year	67,382	56,764	42,298
Supplemental Cash Flow Information:
Income tax refunds	282	665	1,450
Income tax payments	8,451	1,508	1,738
Supplemental Non-cash Financing Activities:
Transfer inventory to capital equipment	0	0	116
Issuance of common stock for acquisition of interest in Kingstone	3,835	0	0
Repurchase of common stock financed with current liabilities	$ 1,225	$ 0	$ 0