CONSOLIDATED BALANCE SHEETS [Parenthetical] - USD ($)	Sep. 30, 2016	Sep. 30, 2015
Allowance for doubtful accounts (in dollars)	$ 171,000	$ 168,000
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	17,677,284	17,368,738
Common stock, shares outstanding	16,867,124	16,558,578
Treasury stock, shares	810,160	810,160