CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Dec. 31, 2012	Sep. 30, 2012
Allowance for doubtful accounts (in dollars)	$ 149,280	$ 146,210
Allowance for sales returns (in dollars)	$ 44,004	$ 51,860
Common stock, par value (in dollars per share)	$ 0.0005	$ 0.0005
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	15,620,314	15,610,517
Common stock, shares outstanding	14,810,154	14,800,357
Treasury stock, shares (in shares)	810,160	810,160