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Promissory Note (Narrative I) (Details) - USD ($)
1 Months Ended
Jan. 25, 2013
Jul. 31, 2012
Notes [Member]    
Promissory Note [Line items]    
Debt Instrument, Face Amount $ 1,125,000 $ 1,333,000
Accounts payable waived $ 1,519,000  
Interest rate 7.50%  
Interest rate if in default 10.00%  
Morrison And Foerster L.L.P. [Member]    
Promissory Note [Line items]    
Exercise price of warrants $ 0.83