Long-Term Debt (Detail) (USD $)	Jan. 31, 2013	Jan. 31, 2012	Sep. 01, 2011
Debt Instrument [Line Items]
Less: debt discount	$ (370,286)	$ (653,826)
Convertible notes	1,909,714	746,366
Less: Current Portion	0	596,366
Long Term Portion	1,909,714	150,000
10% Senior Subordinated Convertible Notes due January 31, 2016
Debt Instrument [Line Items]
Convertible notes	1,250,000	1,250,000
9% Senior Subordinated Convertible Notes due February 15, 2016
Debt Instrument [Line Items]
Convertible notes	880,000	0
8% Senior Subordinated Convertible Notes due February 1, 2015
Debt Instrument [Line Items]
Convertible notes	$ 150,000	$ 150,000	$ 150,000

Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Section S99

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-Subparagraph (SX 210.5-02.22)

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-Publisher SEC

-Name Regulation S-X (SX)

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder.

+ References

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-Name Regulation S-X (SX)

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Carrying value as of the balance sheet date of the portion of long-term debt due within one year or the operating cycle if longer identified as Convertible Notes Payable. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

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-Paragraph 16, 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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