Commitments and Contingencies - Contingencies and Litigation (Details) (USD $)	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010	Mar. 31, 2012
Commitments and Contingencies [Abstract]
Asset Impairment Charges	$ 0	$ 0	$ 1,100,000
Equity Method Investment, Ownership Percentage			55.00%
Equity Method Investment, Realized Gain (Loss) on Disposal	100,000
Convertible Debt Holder's Principal Balance - Investor who filed litigation	3,700,000
Redemption Premium % for Convertible Debt	15.00%
Debt Conversion, Converted Instrument, Default Rate	15.00%
Convertible Debt Holder's Principal Balance - Remaining Three Holders	13,000,000
Convertible Debt Holder's Principal Balance - Two Holders who continued litigation	4,000,000
Loss Contingency, Settlement Agreement, Consideration	250,000			200,000
Excess segregated funds returned	15,500,000
Excess segregated funds invested	21,900,000
Pre and Post Transfers of Funds related to Sentinel	15,500,000
Customer Segregated Transfers of Funds Pursuant to Safe Harbor	$ 1,100,000