Annual report pursuant to section 13 and 15(d)

Notes Payable (Black-Scholes Option Pricing Model) (Detail)

v2.4.0.6
Notes Payable (Black-Scholes Option Pricing Model) (Detail) (Warrant [Member])
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Warrant [Member]
   
Debt Instrument [Line Items]    
Dividend yield 0.00% 0.00%
Expected volatility 62.19%  
Risk-free interest rate 0.88% 0.88%
Expected life (in years) 5 years 5 years