Consolidated Balance Sheets (Parentheticals) (USD $)	Mar. 31, 2012	Sep. 30, 2011
Accounts receivable, allowance (in Dollars)	$ 300,000	$ 300,000
Allowance for excess and obsolete inventory (in Dollars)	$ 1,758,000	$ 1,556,000
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	10,465,323	10,431,354
Common stock, shares outstanding	10,189,120	10,207,390
Treasury stock, shares	276,203	223,964