Stock Option Plans Stock Options Plans (Details) (USD $)	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at September 30, 2009	481,000	507,051	411,975	428,783
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price	$ 4.32	$ 4.45	$ 4.42	$ 4.35
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term	6 years 1 month 6 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Remaining Contractual Term	4 years 9 months 18 days
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options	548,000
Stock Repurchased and Retired During Period, Value		0	0
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	57,058
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	78,000	151,000	25,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 3.19	$ 4.03	$ 5.23
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	0	(52,924)	(15,308)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 0.00	$ 3.02	$ 3.23
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period	(104,051)	(3,000)	(26,500)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price	$ 4.18	$ 4.06	$ 4.86
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	254,700
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 4.57
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 2.03	$ 2.54	$ 3.54
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value		0	0
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 0
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	1 year 4 months 24 days