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Convertible Notes (Parenthetical) (Detail) (USD $) | 9 Months Ended |
--- | --- | ---
Oct. 31, 2013 | Jan. 31, 2013
Debt Instrument [Line Items] |  |
Debt, interest rate | 10.00% |
10% Senior Subordinated Convertible Notes due January 31, 2016 |  |
Debt Instrument [Line Items] |  |
Debt, interest rate | 10.00% |
Debt discount | $ 133,277 | $ 183,389
Debt instrument, maturity date | Jan. 31, 2016 |
9% Senior Subordinated Convertible Notes due February 15, 2016 |  |
Debt Instrument [Line Items] |  |
Debt, interest rate | 9.00% |
Debt discount | $ 168,162 | $ 186,897
Debt instrument, maturity date | Feb. 15, 2016 |
8% Senior Subordinated Convertible Notes due February 1, 2015 |  |
Debt Instrument [Line Items] |  |
Debt, interest rate | 8.00% |
Debt instrument, maturity date | Feb. 01, 2015 |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 + Details
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