Condensed Consolidated Statements of Income (USD $)	3 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Net sales	$ 12,351,992	$ 11,727,525
Cost of sales	7,422,639	6,918,592
Gross profit	4,929,353	4,808,933
Operating expenses:
Selling, general and administrative expense	3,871,294	4,012,899
Engineering & development expense	1,361,592	1,441,440
Patent litigation expense	0	80,629
Operating Expenses	5,232,886	5,534,968
Operating loss	(303,533)	(726,035)
Interest income	(23,728)	(84,310)
Other expense (income)	(14,837)	(10,601)
Loss before income taxes	(264,968)	(631,124)
Income tax benefit	19,000	(177,000)
Net loss	$ (283,968)	$ (454,124)
Loss per share:
Earnings Per Share, Basic	$ (0.06)	$ (0.10)
Earnings Per Share, Diluted	$ (0.06)	$ (0.10)
Weighted average shares outstanding:
Basic	4,491,857	4,481,198
Diluted	4,491,857	4,481,198