Quarterly report pursuant to sections 13 or 15(d)

Preferred Stock - Additional Information (Detail)

Preferred Stock - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	12 Months Ended			3 Months Ended		12 Months Ended	3 Months Ended				3 Months Ended					1 Months Ended	3 Months Ended
	Oct. 31, 2012	Mar. 31, 2013	Dec. 31, 2012	Sep. 25, 2012	Sep. 12, 2012	Jun. 30, 2013 Subsequent Event	Mar. 31, 2013 Series B	Dec. 31, 2012 Series B Preferred Stock	Mar. 31, 2013 Series C Convertible Preferred Stock D	Mar. 31, 2012 Series C Convertible Preferred Stock	Dec. 31, 2012 Series C Convertible Preferred Stock	Dec. 20, 2012 Series C Convertible Preferred Stock	Mar. 31, 2013 Series C Convertible Preferred Stock Period 3	Mar. 31, 2013 Series C Convertible Preferred Stock Period 4	Mar. 31, 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	Mar. 31, 2013 Series E Convertible Preferred Stock	Mar. 31, 2013 Series E Convertible Preferred Stock After Trigger Date	Mar. 31, 2013 Series E Convertible Preferred Stock Scenario 2
Preferred Stock [Line Items]
Preferred stock authorized to issue		5,000,000						1,000,000	25,000		25,000				13,000	13,000
Proceeds from issuance of convertible preferred stock		$ 5,000,000					$ 6,000,000	$ 5,195,225	$ 10,000,000									$ 5,000,000
Preferred stock issued due to investment agreement					600,000				10,000		10,000				11,915	11,177
Preferred stock , Par value					$ 0.001				$ 0.001		$ 0.001	$ 0.001			$ 0.001	$ 0.001	$ 0.001
Conversion price per share		$ 0.13				$ 1.17				$ 0.6889					$ 0.6959			$ 1.17
Convertible Preferred Stock, Total Shares Issued Upon Conversion					46,153,692
Ownership Percentage			73.00%
Convertible stock, Conversion of preferred stock	599,998
Convertible stock, Conversion of convertible securities	46,153,846
Liquidation preference per share					$ 10							$ 1,000					$ 100	$ 1,000
Common stock price in increased rate				$ 0.59
Preferred stock issued due to investment agreement												10,000					11,177	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%
Preferred stock, stated value for cumulative dividends									$ 1,000
Preferred stock, dividends accrued		280,556							250,000
Merger agreement, number of shares issued															738
Preferred stock redemption price as percentage of liquidation preference																				110.00%	105.00%
Accrual of dividends on Series E convertible preferred stock		$ 277,083																	$ 27,083