Convertible Notes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended					9 Months Ended	12 Months Ended	1 Months Ended	9 Months Ended	12 Months Ended		1 Months Ended				9 Months Ended		12 Months Ended	1 Months Ended								9 Months Ended	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended	9 Months Ended		9 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012	Oct. 31, 2011	Oct. 29, 2012	Jan. 31, 2012	Oct. 16, 2009	Oct. 31, 2012 Derivative liability	Jan. 31, 2012 Derivative liability	Oct. 29, 2012 Warrant	Oct. 31, 2012 Warrant	Jan. 31, 2012 Warrant	Jan. 31, 2010 Warrant	Oct. 29, 2012 Warrant Prior Amendment	Oct. 29, 2012 Warrant Post Amendment	Oct. 29, 2012 10% Senior Subordinated Convertible Notes due January 31, 2016	Oct. 16, 2009 10% Senior Subordinated Convertible Notes due January 31, 2016	Oct. 31, 2012 10% Senior Subordinated Convertible Notes due January 31, 2016	Oct. 31, 2011 10% Senior Subordinated Convertible Notes due January 31, 2016	Jan. 31, 2012 10% Senior Subordinated Convertible Notes due January 31, 2016	Oct. 29, 2012 10% Senior Subordinated Convertible Notes due January 31, 2016 Placement Agent	Oct. 16, 2009 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	Oct. 31, 2012 10% Senior Subordinated Convertible Notes due January 31, 2013 Placement Agent	Sep. 01, 2011 8% Senior Subordinated Convertible Notes due February 1, 2015	Oct. 31, 2012 8% Senior Subordinated Convertible Notes due February 1, 2015	Oct. 31, 2011 8% Senior Subordinated Convertible Notes due February 1, 2015	Oct. 31, 2012 8% Senior Subordinated Convertible Notes due February 1, 2015	Oct. 31, 2011 8% Senior Subordinated Convertible Notes due February 1, 2015	Jan. 31, 2012 8% Senior Subordinated Convertible Notes due February 1, 2015	Oct. 31, 2012 8% Senior Subordinated Convertible Notes due February 1, 2015 Minimum	Oct. 31, 2012 8% Senior Subordinated Convertible Notes due February 1, 2015 Maximum	Oct. 31, 2012 8% Senior Subordinated Convertible Notes due February 1, 2015 Debt Holders
Debt Instrument [Line Items]
Convertible notes	$ 1,036,288		$ 1,036,288			$ 746,366											$ 1,250,000	$ 886,288		$ 596,366										$ 150,000	$ 150,000		$ 150,000		$ 150,000
Proceeds from issuance of convertible notes payable																	1,100,000
Convertible notes, interest rate																10.00%	10.00%	10.00%		10.00%										8.00%	8.00%		8.00%		8.00%
Convertible notes payable, interest payment terms																	The notes bear interest at a rate of 10% annually, payable semi- annually on January 31 and July 31.													The notes bear interest at a rate of 8% annually, payable semi annually on December 31 and June 30.
Convertible notes, maturity date																Jan. 31, 2016	Jan. 31, 2013	Jan. 31, 2016		Jan. 31, 2016										Feb. 01, 2015			Feb. 01, 2015		Feb. 01, 2015
Debt, face amount																											25,000	25,000
Common shares which could be purchased upon exercise of warrants																						250,000						25,000
Warrant term period	5 years		5 years																			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																	25,000
Warrants, exercise price	0.125		0.125		0.11485	0.11485	0.11485															0.25
Restricted shares granted to agent																						100,000	20,000
Prepaid financing cost, amortization period																						40 months
Financing cost	20,776	34,375	61,671	53,125								120,000					25,000					4,000
Number of common shares issuable up on conversion of note per $25,000 principal amount																			200,000											100,000
Debt, convertible conversion ratio principal basis																			25,000							2.50				25,000
Debt, convertible latest date																			Jan. 31, 2013											Feb. 01, 2015
Debt conversion, price per share of common stock																$ 0.11485		$ 0.125	$ 0.125											$ 0.25
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																		30 days
Convertible debt, redemption price as a percentage of principal amount																			102.00%												108.00%		108.00%
Earliest redemption date convertible debt																			Jan. 31, 2012														Jun. 30, 2014					Jun. 30, 2013
Derivative liability, debt discount									653,026
Reset of Change in conversion price									$ 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								60 months	3 months	3 years 3 months	3 years 9 months 18 days			5 years
Black-Scholes option-pricing model assumptions, stock price volatility								80.00%			80.00%	30.00%		80.00%	80.00%								80.00%	80.00%	80.00%	80.00%			48.00%
Black-Scholes option-pricing model assumptions, risk-free interest rate								0.30%			2.16%	0.30%		0.28%	0.37%								0.37%	0.18%	0.37%	0.37%			2.16%
Warrant expiration date	Oct. 31, 2014		Oct. 31, 2014		Jul. 31, 2016		Oct. 31, 2014
Fair value of warrants											2,653		2,418		808,732								56,225			200,452			2,200
Warrants issued to purchase common stock																							100,000			500,000			250,000
Warrants issued to purchase common stock, exercise price per share																							$ 0.50			$ 0.45			$ 0.25
Warrant expiration period after issuance date																													5 years
Warrant liability						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
Convertible notes deferred financing costs, amortization period end date																					Jan. 31, 2016
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	$ 200,463	$ 33,672	$ 608,510	$ 96,849																											$ 205,100	$ 68,047	$ 619,397	$ 149,974