Effect on Consolidated Statement of Operations (Detail) (USD $)	3 Months Ended			9 Months Ended			12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011		Sep. 30, 2012	Sep. 30, 2011		Dec. 31, 2011
Loss from operations	$ (1,251,620)	$ (1,430,518)		$ (4,358,118)	$ (5,539,143)
Other expenses:
Interest expense	(108,395)	(26,714)		(241,944)	(123,818)
Amortization of debt discounts		(69,029)		(373,553)	(436,457)
Loss on debt extinguishment					1,350,000
Fair value of bonus warrants at debt extinguishment					797,185
Change in fair value of derivative liabilities	(445,684)	2,327,601		(919,361)	1,968,040
Total other expenses	(337,289)	2,423,344		(303,864)	4,675,500
Net loss	(914,331)	(3,853,862)		(4,054,254)	(10,214,643)
Accretion of preferred dividends and beneficial conversion feature	438,922	207,097		1,262,126	414,653
Net loss attributable to common shareholders	(1,353,253)	(4,060,959)		(5,316,380)	(10,629,296)
Weighted average common shares - basic and diluted	26,766,317	24,715,584		26,157,795	24,091,129
Basic and diluted net loss per share	$ (0.05)	$ (0.16)		$ (0.20)	$ (0.44)
Scenario, Previously Reported
Loss from operations		(1,430,518)			(5,539,143)
Other expenses:
Interest expense		26,714			123,818
Amortization of debt discounts		244,858			914,907
Loss on debt extinguishment
Change in fair value of derivative liabilities		2,396,300			2,396,300
Total other expenses		2,667,872			3,435,025
Net loss		(4,098,390)			(8,974,168)
Accretion of preferred dividends and beneficial conversion feature		(207,097)			(414,653)
Net loss attributable to common shareholders		(4,305,487)			(9,388,821)
Weighted average common shares - basic and diluted		24,715,584			24,091,129
Basic and diluted net loss per share		$ (0.17)			$ (0.39)
Restatement Adjustment
Other expenses:
Amortization of debt discounts		(102,857)	[1]		(291,428)	[1]
Reverse Impact Of Improper Recording Of Fair Value Of Bonus Warrants Upon Issuance		(72,972)	[2]		(187,022)	[2]
Loss on debt extinguishment					1,350,000	[3]
Fair value of bonus warrants at debt extinguishment					(797,185)	[4]
Change in fair value of derivative liabilities		(68,699)	[5]		(428,260)	[5]
Total other expenses		(244,528)			1,240,475
Net loss		244,528			(1,240,475)
Net loss attributable to common shareholders		$ 244,528			$ (1,240,475)
Weighted average common shares - basic and diluted		24,715,584			24,091,129
Basic and diluted net loss per share		$ 0.01			$ (0.05)

[1] to reverse the improper amortization of debt discount.

[2] to reverse the impact of the improper recording of the fair value of the Bonus Warrants upon issuance.

[3] to record the difference between the reacquisition price of the new debt and the net carrying amount of the extinguished debt at the amendment date.

[4] to record the fair value of the bonus warrants as of the amendment date as a component of the reacquisition price of the new debt.

[5] to recognize the gain on the change in the fair value of the derivative liability associated with the bonus warrants at period end.