Consolidated Condensed Balance Sheets (Unaudited) (Parentheticals) - USD ($)	Dec. 31, 2015	Sep. 30, 2015
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	30,000,000	30,000,000
Common stock, shares issued (in shares)	10,572,019	10,564,221
Common stock, shares outstanding (in shares)	10,071,361	10,063,563
Treasury stock, shares (in shares)	500,658	500,658
Accounts receivable, allowance for doubtful accounts	$ 250,000	$ 250,000
Allowance for excess and obsolete inventory	$ 2,906,628	$ 2,756,628