CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Mar. 31, 2013	Sep. 30, 2012
Allowance for doubtful accounts (in dollars)	$ 186,110	$ 198,070
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	15,779,791	15,610,517
Common stock, shares outstanding	14,969,631	14,800,357
Treasury stock, shares (in shares)	810,160	810,160