CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2011	Sep. 30, 2010
Preferred Stock, shares authorized	10,000,000	10,000,000
Preferred Stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred Stock, shares issued	0	0
Preferred Stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	18,286,884	18,244,701
Treasury stock, shares	1,544,910	1,482,510
Class A Convertible stock
Preferred Stock, shares authorized	200,000	200,000