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Investment in Subsidiaries - Summary of Financial Information (Detail) (Nanotope, Inc [Member], USD $) | 12 Months Ended
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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

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