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Convertible Notes Payable - Additional Information (Detail) (USD $) | 3 Months Ended | 12 Months Ended |  |  | 1 Months Ended | 12 Months Ended |  | 1 Months Ended | 0 Months Ended | 12 Months Ended |  | 12 Months Ended | 1 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 1 Months Ended |  | 0 Months Ended | 12 Months Ended |  | 12 Months Ended
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Jan. 31, 2013 | Oct. 31, 2012 | Jul. 31, 2012 | Apr. 30, 2012 | Jan. 31, 2012 | Oct. 31, 2011 | Jul. 31, 2011 | Apr. 30, 2011 | Jan. 31, 2013 | Jan. 31, 2012 | Oct. 29, 2012 | Oct. 16, 2009 | Jan. 31, 2012 Derivative liability | Oct. 29, 2012 Warrant | Jan. 31, 2013 Warrant | Jan. 31, 2012 Warrant | Jan. 31, 2010 Warrant | Oct. 29, 2012 Warrant Prior Amendment | Oct. 29, 2012 Warrant Post Amendment | Sep. 01, 2011 8% Senior Subordinated Convertible Notes due February 1, 2015 | Jan. 31, 2013 8% Senior Subordinated Convertible Notes due February 1, 2015 | Jan. 31, 2012 8% Senior Subordinated Convertible Notes due February 1, 2015 | Jan. 31, 2013 8% Senior Subordinated Convertible Notes due February 1, 2015 Minimum | Oct. 29, 2012 10% Senior Subordinated Convertible Notes due January 31, 2016 | Oct. 16, 2009 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 Placement Agent | Jan. 31, 2013 10% Senior Subordinated Convertible Notes due January 31, 2016 Placement Agent | Oct. 29, 2012 10% Senior Subordinated Convertible Notes due January 31, 2016 Private Placement | Oct. 29, 2012 10% Senior Subordinated Convertible Notes due January 31, 2016 Prior Amendment | Oct. 29, 2012 10% Senior Subordinated Convertible Notes due January 31, 2016 Post Amendment | Oct. 29, 2012 10% Senior Subordinated Convertible Notes due January 31, 2016 Amendment Warrants | Oct. 16, 2009 10% Senior Subordinated Convertible Notes due January 31, 2016 Subordinated Units | Oct. 16, 2009 10% Senior Subordinated Convertible Notes due January 31, 2016 Warrant | Jan. 31, 2013 9% Senior Subordinated Convertible Notes due February 15, 2016 | Jan. 31, 2013 9% Senior Subordinated Convertible Notes due February 15, 2016 Placement Agent | Jan. 31, 2013 9% Senior Subordinated Convertible Notes due February 15, 2016 Private Placement
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible notes | $ 1,909,714 |  |  |  | $ 746,366 |  |  |  | $ 1,909,714 | $ 746,366 |  |  |  |  |  |  |  |  |  | $ 150,000 | $ 150,000 | $ 150,000 |  |  | $ 1,250,000 |  |  |  |  |  |  |  |  |  |  |  | $ 880,000
Proceeds from issuance of convertible notes payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,100,000 |  |  |  |  |  |  |  |  |  |  |  |
Convertible notes, interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.00% |  |  | 10.00% | 10.00% | 10.00% |  |  |  |  |  |  |  |  |  |  | 9.00%
Convertible notes payable, interest payment terms |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | The notes bear interest at a rate of 8% annually, payable semi annually on December 31 and June 30. |  |  |  |  | The notes bear interest at a rate of 10% annually, payable semi- annually on January 31 and July 31. |  |  |  |  |  |  |  |  |  | If the Average Daily Value of Trades ("ADVT") during the prior 90 days as reported by Bloomberg is greater than $100,000, the Note is callable at a price of 105% of the Note's par value, and if the ADVT is less than $100,000, the Note is callable at a price of 110% of the Note's par value. |  | The 9% Notes bear interest at a rate of 9% per annum, payable semi-annually on August 15 and February 15.
Convertible notes, maturity date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Feb. 01, 2015 |  |  | Jan. 31, 2016 | Jan. 31, 2013 |  |  |  |  |  |  |  |  |  |  |  | Feb. 15, 2016
Debt, face amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25,000 | 25,000 |  |  |
Common shares which could be purchased upon exercise of warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 660,000 |  |  |  |  |  |  |  |  |  |  |  | 250,000 | 250,000 |  |  |  |  |  | 25,000 |  | 176,000 |
Warrant term period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  | 5 years |  |  |
Gross proceeds from issuance of convertible notes payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,250,000 |  |  |  |  |  |  |  |  |  |  |  |
Placement of subordinate debt, commission paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 125,000 |  |  |  |  |  |  |  |  |  |  |  |
Placement of subordinate debt, other direct expenses |  |  |  |  |  |  |  |  | 104,420 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25,000 |  |  |  |  |  |  |  |  |  |  |  |
Warrants, exercise price | 0.125 |  |  |  | 0.11485 |  |  |  | 0.125 | 0.11485 | 0.11485 |  |  |  | 0.45 |  |  |  |  |  |  |  |  |  |  |  | 0.25 | 0.25 |  |  |  |  |  |  |  | 0.40 |
Restricted shares granted to agent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100,000 |  | 20,000 |  |  |  |  |  |  |  |
Prepaid financing cost, amortization period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40 months |  |  |  |  |  |  |  |  |  |
Financing cost |  |  |  |  |  |  |  |  | 0 | 0 |  |  |  |  |  | 120,000 |  |  |  |  |  |  |  |  | 25,000 |  | 4,000 |  |  |  |  |  |  |  |  |  |
Debt, convertible latest date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Feb. 01, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt conversion, price per share of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.25 |  |  |  | $ 0.11485 | $ 0.25 | $ 0.125 |  | $ 0.25 |  |  |  |  |  |  |  |  | $ 0.40
Debt conversion, percentage of stock price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 110.00% |  |  |  |  |  |  |  |  |  |  |
Minimum conversion price per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.05 |  |  |  |  |  |  |  |  |  |  |
Minimum conversion price per cash EPS multiplier |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8 |  |  |  |  |  |  |  |  |  |  |
Debt redemption notice period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60 days |  |  |  |  |  |  |  |  |  |  |
Convertible debt, redemption price as a percentage of principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 108.00% |  |  |  |  | 102.00% |  |  |  |  |  |  |  |  |  |  |
Earliest redemption date convertible debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Jun. 30, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative liability, debt discount |  |  |  |  |  |  |  |  |  |  |  |  | 653,026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reset of Change in conversion price |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.11485 |  | $ 0.11485 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Black-Scholes option-pricing model assumptions, expected life |  |  |  |  |  |  |  |  |  |  |  |  | 1 year |  | 5 years | 2 years 9 months |  | 2 years | 3 years 9 months 18 days |  |  |  |  |  |  |  |  | 5 years | 60 months | 3 months | 3 years 3 months | 3 years 9 months 18 days |  |  |  |  |
Black-Scholes option-pricing model assumptions, stock price volatility |  |  |  |  |  |  |  |  |  |  |  |  | 80.00% |  | 80.00% | 30.00% |  | 80.00% | 80.00% |  |  |  |  |  |  |  |  | 48.00% | 80.00% | 80.00% | 80.00% | 80.00% |  |  |  |  |
Black-Scholes option-pricing model assumptions, risk-free interest rate |  |  |  |  |  |  |  |  |  |  |  |  | 0.30% |  | 2.16% | 0.30% |  | 0.28% | 0.37% |  |  |  |  |  |  |  |  | 2.16% | 0.37% | 0.18% | 0.37% | 0.37% |  |  |  |  |
Warrant expiration date | Oct. 31, 2014 |  |  |  |  |  |  |  | Oct. 31, 2014 |  |  | Oct. 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,653 |  | 2,418 |  | 808,732 |  |  |  |  |  |  |  |  | 2,200 | 56,225 |  |  | 200,452 |  |  |  |  |
Warrants issued to purchase common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100,000 |  |  | 500,000 |  |  |  |  |
Warrants issued to purchase common stock, exercise price per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.50 |  |  | $ 0.45 |  |  |  |  |
Warrant expiration period after issuance date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |
Warrant liability | 0 |  |  |  | 120,000 |  |  |  | 0 | 120,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of derivative liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,605,703 |  |  |  |  |  |  |
Fair value of conversion right |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,818,149 |  |  |  |  |  |
Loss on debt modification |  |  |  |  |  |  |  |  |  |  |  |  |  | 24,437 |  |  |  |  |  |  |  |  |  | 212,446 |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants issued to purchase common stock, contractual life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60 months |  |  |  |  |  |  |  |
Restricted shares granted to agent, fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,600 |  |  |  |  |  |  |  |
Fair value of warrants and restricted shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 68,825 |  |  |  |  |  |  |  |
Fair value of warrant liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 785,135 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants exchange ratio to common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |
Debt conversion description |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | The Company may require the holders of the 8% Notes to convert to common stock at the then applicable conversion rate at any time after June 30, 2013 if i) our 10% Notes have been fully repaid or converted and ii) the closing price of our common stock has exceeded 150% of the then applicable Conversion Price for no less than 30 consecutive trading days prior to giving notice. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Closing price, percentage of applicable Conversion Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 150.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense | 259,995 | 221,239 | 224,906 | 224,036 | 154,060 | 68,047 | 40,978 | 40,949 | 930,176 | 304,034 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Convertible Conversion Ratio Basis Principal Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,000 |  |  |  |  |  | $ 25,000 |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Conversion of Convertible Securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100,000 |  |  |  |  |  | 200,000 |  |  |  |  |  |  |  |  |  |  |
Principle recevied for one warrant to purchase one common shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.50 |  |  |  |  |

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- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -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. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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