CONSOLIDATED BALANCE SHEETS [Parenthetical] - USD ($)	Mar. 31, 2019	Sep. 30, 2018
Allowance for doubtful accounts (in dollars)	$ 267,000	$ 262,000
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	18,301,216	18,152,074
Common stock, shares outstanding	17,491,056	17,341,914
Treasury stock, shares	810,160	810,160

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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