Consolidated Statements of Operations (USD $)	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Net sales	$ 49,652,366	$ 47,182,236	$ 48,681,122
Cost of sales	30,015,525	28,979,516	28,183,336
Gross profit	19,636,841	18,202,720	20,497,786
Operating expenses:
Selling, general and administrative expense	15,816,594	16,441,262	16,868,086
Engineering & development expense	5,207,997	5,930,719	5,510,207
Patent litigation expense	0	5,374,834	51,158
Operating Expenses	21,024,591	27,746,815	22,429,451
Operating loss	(1,387,750)	(9,544,095)	(1,931,665)
Other expense (income):
Interest and other income	(64,405)	(222,149)	(188,907)
Loss before income taxes	(1,323,345)	(9,321,946)	(1,742,758)
Income tax benefit	(57,000)	(2,138,000)	493,000
Net loss	$ (1,380,345)	$ (11,459,946)	$ (1,249,758)
Loss per share:
Earnings Per Share, Basic	$ (0.31)	$ (2.55)	$ (0.28)
Earnings Per Share, Diluted	$ (0.31)	$ (2.55)	$ (0.28)
Weighted average shares outstanding:
Basic	4,481,239	4,488,526	4,535,617
Diluted	4,481,239	4,488,526	4,535,617