Eight Percent Convertible Promissory Notes - Additional Information (Detail) (USD $)	9 Months Ended					3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jul. 31, 2013	Apr. 30, 2013	Dec. 31, 2011	Sep. 30, 2013 Unpaid Interest	Sep. 30, 2013 Unpaid Interest	Sep. 30, 2013 8% convertible promissory notes	Sep. 30, 2013 8% convertible promissory notes Investor
Debt Disclosure [Line Items]
Convertible debt									$ 1,750,001
Convertible debt, interest rate			8.00%	8.00%				8.00%
Convertible debt, conversion price									$ 0.40
Warrants to purchase common stock, shares									4,375,004
Debt Instrument Payment Terms								The 8% Notes, including all outstanding principal and accrued and unpaid interest, are due and payable on the earlier of five years from date of issuance or upon the occurrence of an Event of Default (as defined in the 8% Notes). We may prepay the 8% Notes, in whole or in part, upon 60 calendar days prior written notice to the holders thereof. Interest accrues on the 8% Notes at a rate of 8.0% per annum, payable during the first three years that the 8% Notes are outstanding in shares of common stock, valued at the weighted average price of a share of common stock for the twenty consecutive trading days prior to the interest payment date, pursuant to the terms of the 8% Notes. During the fourth and fifth years that the 8% Notes are outstanding, interest that accrues under the 8% Notes shall be payable in cash.
Stock issued during period, shares, new issues							355,903
Warrant exercise price					1.00			0.60
Warrant Terms								for a period commencing on the date of issuance and ending on the earlier to occur of the date that is (i) three years after the date upon which the weighted average price of a share of common stock for the 90 consecutive trading days prior to such date is at least $2.00 per share, and (ii) five years after the date on which the 8% Note to which the applicable warrant is related has been repaid in full.
Amortization of convertible debt discount	414,525	0							414,525
Accrued unpaid interest						181,509
Increase Debt Discount	$ 794,576