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Long-Term Debt (Detail) (USD $) | Jan. 31, 2014 | Jan. 31, 2013 | Jan. 31, 2014 10% Senior Subordinated Convertible Notes due January 31, 2016 | Jan. 31, 2013 10% Senior Subordinated Convertible Notes due January 31, 2016 | Oct. 16, 2009 10% Senior Subordinated Convertible Notes due January 31, 2016 | Jan. 31, 2014 9% Senior Subordinated Convertible Notes due February 15, 2016 | Jan. 31, 2013 9% Senior Subordinated Convertible Notes due February 15, 2016 | Jan. 31, 2014 8% Senior Subordinated Convertible Notes due February 1, 2015 | Jan. 31, 2013 8% Senior Subordinated Convertible Notes due February 1, 2015 | Sep. 01, 2011 8% Senior Subordinated Convertible Notes due February 1, 2015
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Convertible Notes | $ 1,100,522 | $ 1,909,714 | $ 0 | $ 1,066,611 | $ 1,250,000 | $ 950,522 | $ 693,103 | $ 150,000 | $ 150,000 | $ 150,000
Less: Current Portion | 0 | 0 |  |  |  |  |  |  |  |
Long Term Portion | $ 1,100,522 | $ 1,909,714 |  |  |  |  |  |  |  |

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