Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2012	Sep. 30, 2011
Balance Sheets [Abstract]
Common stock, par value	$ 0.0166	$ 0.0166
Common stock, shares authorized	24,000,000	24,000,000
Common stock, shares issued	8,431,502	8,431,502
Treasury stock, shares	181,310	175,331