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Commitments and Contingencies Level 4 - Contingencies and Litigation (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Jun. 30, 2012
Mar. 31, 2012
Commitments and Contingencies [Abstract]    
Convertible Debt Holder's Principal Balance - Investor who filed litigation $ 3.7  
Redemption Premium % for Convertible Debt 15.00%  
Debt Conversion, Converted Instrument, Default Rate 15.00%  
Convertible Debt Holder's Principal Balance - Remaining Three Holders 13.0  
Convertible Debt Holder's Principal Balance - Two Holders who continued litigation 4.0  
Loss Contingency, Settlement Agreement, Consideration   0.2
Pre and Post Transfers of Funds related to Sentinel 15.5  
Customer Segregated Transfers of Funds Pursuant to Safe Harbor $ 1.1