CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2011	Sep. 30, 2010
CONDENSED CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 73,000	$ 70,000
Common stock, par value (in dollars per share)	$ 0.50	$ 0.50
Common stock, authorized shares	20,000,000	20,000,000
Common stock, issued shares	8,445,060	8,445,060
Treasury stock, shares	167,900	167,900