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Investment in Subsidiaries - Summary of Financial Information (Detail) (Nanotope, Inc [Member], USD $)
 12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Nanotope, Inc [Member]
    
Schedule of Investments [Line Items]    
Current assets $ 31,000 $ 21,000
Non-current assets 0 85,000
Liabilities 2,070,000 1,255,000
Equity (2,039,000) (1,149,000)
Revenue 0 515,000
Operating expenses 808,000 1,161,000
Net Loss (890,000) (709,000)
Cash flows used in operating activities (831,000) (705,000)
Cash flows provided by (used in) investing activities 61,000 (31,000)
Cash flows provided by financing activities $ 784,000 $ 746,000