Unrecognized Tax Benefits (Details) (USD $)	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Unrecognized Tax Benefits [Abstract]
Unrecognized Tax Benefits	$ 512,000	$ 488,000	$ 462,000	$ 514,000
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	24,000	26,000
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions			(3,000)
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	0	0
Unrecognized Tax Benefits, Decreases Resulting from Current Period Tax Positions			$ (49,000)