Income Taxes (Details 1) (USD $)	Sep. 30, 2012	Sep. 30, 2011
Net operating loss domestic	$ 367,959	$ 505,522
Net operating loss foreign	475,693	475,693
Sales returns and allowances	314,428	360,345
Inventory obsolescence reserve	355,627	424,215
Allowance for bad debts	133,807	161,034
Vacation accrual	24,588	24,588
Warranty reserve	9,158	9,158
263 A inventory capitalization	139,880	148,301
Depreciation	39,928	48,870
Goodwill	53,296	73,816
AMT credit	177,704	177,704
R&D credit	311,275	391,356
Subtotal	2,403,343	2,800,602
Valuation allowance	(803,583)	(883,664)
Net deferred tax assets	$ 1,599,760	$ 1,916,938

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