Derivative Liabilities - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
Expected life	1 year 4 months 24 days
Fair value assumptions, expected dividend rate	0.00%
Volatility	45.00%
Risk-free interest rate	0.20%
10% convertible preferred stock
Derivative [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	58,352
Expected life	3 years
Fair value assumptions, expected dividend rate	0.00%
Volatility	90.00%
Risk-free interest rate	0.40%
Placement Agent Warrants
Derivative [Line Items]
Warrants Not Settleable in Cash, Fair Value Disclosure	$ 175,200	$ 296,200
Change in fair value of warrant liability	121,000
Conversion Options
Derivative [Line Items]
Derivative liability at fair value	8,400,000
Increase decrease in fair value of un hedged derivative instruments	5,000,000
Conversion Options | Issuances date
Derivative [Line Items]
Derivative liability at fair value	1,000,000
Warrant
Derivative [Line Items]
Increase decrease in fair value of un hedged derivative instruments	1,800,000
Warrant | Issuances date
Derivative [Line Items]
Derivative liability at fair value	400,000
Warrant | Issuances date | Derivative
Derivative [Line Items]
Derivative liability at fair value	$ 3,400,000