Quarterly report pursuant to sections 13 or 15(d)

Preferred Stock - Additional Information (Detail)

Preferred Stock - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended				9 Months Ended	3 Months Ended	9 Months Ended			9 Months Ended		12 Months Ended		1 Months Ended	3 Months Ended				1 Months Ended	3 Months Ended	9 Months Ended			1 Months Ended	3 Months Ended	9 Months Ended
	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	May 14, 2013	Sep. 25, 2012	Sep. 12, 2012	Sep. 30, 2013 Series B	Sep. 30, 2013 Series C Convertible Preferred Stock	Sep. 30, 2013 Series C Convertible Preferred Stock D	Dec. 31, 2012 Series C Convertible Preferred Stock	Dec. 20, 2012 Series C Convertible Preferred Stock	Sep. 30, 2013 Series C Convertible Preferred Stock Period 3	Sep. 30, 2013 Series C Convertible Preferred Stock Period 4	Dec. 31, 2012 Series B Preferred Stock	Sep. 30, 2013 Series B Preferred Stock	May 15, 2013 Series D Convertible Preferred Stock	Mar. 31, 2013 Series D Convertible Preferred Stock	Sep. 30, 2013 Series D Convertible Preferred Stock	Dec. 31, 2012 Series D Convertible Preferred Stock	Dec. 20, 2012 Series D Convertible Preferred Stock	Feb. 21, 2013 Series E Convertible Preferred Stock	Sep. 30, 2013 Series E Convertible Preferred Stock	Sep. 30, 2013 Series E Convertible Preferred Stock	Sep. 30, 2013 Series E Convertible Preferred Stock After Trigger Date	Sep. 30, 2013 Series E Convertible Preferred Stock Scenario 2	Aug. 22, 2013 Series F Convertible Preferred Stock	Sep. 30, 2013 Series F Convertible Preferred Stock	Sep. 30, 2013 Series F Convertible Preferred Stock
Preferred Stock [Line Items]
Preferred stock authorized to issue		5,000,000						25,000	25,000	25,000					1,000,000				13,000
Preferred stock , Par value								$ 0.001	$ 0.001	$ 0.001					$ 0.001				$ 0.001
Proceeds from issuance of convertible preferred stock							$ 6,000,000		$ 10,000,000					$ 5,195,225							$ 5,000,000					$ 5,000,000
Preferred stock, issued						600,000		10,000	10,000	10,000									11,177
Conversion price per share		$ 0.13							$ 0.6889							$ 0.6959					$ 1.17					$ 4.5881
Convertible Preferred Stock, Total Shares Issued Upon Conversion						46,153,846
Ownership Percentage			73.00%
Convertible stock, Conversion of preferred stock	599,998															11,915
Convertible stock, Conversion of convertible securities	46,153,692															1,712,167
Liquidation preference per share						$ 10					$ 1,000									$ 100	$ 1,000					$ 1,000
Common stock price in increased rate					$ 0.59
Preferred stock issued due to investment agreement											10,000									11,177	5,000					5,000
Preferred stock conversion as a percentage its stated value in an event of a change in control or a merger or recapitalization												150.00%	125.00%
Preferred stock conversion, trading price as percentage of conversion price									200.00%
Preferred stock conversion, number of trading days									20 days
Preferred stock conversion, number of immediate preceding consecutive trading days									30
Preferred stock, cumulative dividends rate									10.00%														5.00%					7.00%
Preferred stock, stated value for cumulative dividends									$ 1,000
Preferred stock, dividends accrued								255,556	758,333
Merger agreement, number of shares issued																	738
Preferred stock, outstanding								10,000	10,000	10,000								0
Convertible redeemable preferred stock, shares authorized																						10,000	10,000				10,000	10,000
Convertible redeemable preferred stock, par value																						$ 0.001	$ 0.001				$ 0.001	$ 0.001
Preferred stock redemption price as percentage of liquidation preference																								110.00%	105.00%
Accrual of dividends on convertible preferred stock		951,389																				63,889	154,167				38,891	38,891
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net		(6,990,353)
Embedded derivative, fair value of embedded derivative liability				8,600,000
Preferred stock redemption price additional amount with liquidation preference																												$ 100,000