Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating activities:
Net loss	$ (1,722,443)	$ (425,553)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities, net of acquisition:
Depreciation	1,127,617	1,052,678
Amortization	705,064	520,650
Stock based compensation	1,179,922	1,164,260
Deferred income tax	(163,172)	(321,270)
Changes in operating assets and liabilities:
Accounts receivable	(371,714)	(720,185)
Inventories	(575,568)	693,770
Other current assets	(1,296,117)	92,453
Accounts payable	854,855	240,504
Income tax payable	199,665	241,519
Other current liabilities	(387,410)	(361,495)
Net cash provided by (used in) operating activities	(449,301)	2,177,331
Investing activities:
Purchase of property, plant and equipment	(1,349,157)	(1,461,497)
Business acquisition	(15,057,816)
Patents, intangibles and goodwill	320,527	(33,070)
Purchases of marketable securities	(28,761,550)	(48,786,945)
Sales and maturities of marketable securities	34,672,191	47,891,929
Net cash used in investing activities	(10,175,805)	(2,389,583)
Financing activities:
Proceeds from long-term debt	17,864,367
Payments on long-term debt	(2,643,415)	(1,460,811)
Excess tax benefit from exercises of stock options		22,189
Repurchase of common stock	(1,184,074)
Proceeds from issuance of common stock	542,898	21,452
Net cash provided by (used in) financing activities	14,579,776	(1,417,170)
Effect of exchange rate on cash and cash equivalents	153,487	(167,939)
Increase (decrease) in cash and cash equivalents	4,108,157	(1,797,361)
Cash and cash equivalents at beginning of period	4,545,907	6,365,584
Cash and cash equivalents at end of period	8,654,064	4,568,223
Supplemental Cash Flow Information
Interest paid	73,907	157,821
Income taxes paid	$ 60,000	$ 264,743