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Derivative Liability (Tables)
3 Months Ended
Mar. 31, 2013
Derivative liability [Abstract]  
Key assumptions used to calculate fair value of warrant derivative liabilities
March 31, 2013December 31, 2012
Expected term0.1 to 2.60 years0.3 to 2.80 years
Volatility208.9%205.3%
Risk-free interest rate1.87%1.78%
Dividend yield0%0%
Liabilities measured at fair value
Value atQuoted
prices in
active
markets
Significant
other
observable
inputs
Significant
unobservable
inputs
March 31, 2013(Level 1)(Level 2)(Level 3)
Derivative liability
$
64
$
-
$
-
$
64
Changes in the market value of the Level 3 derivative liability

Changes in the fair market value of the Level 3 derivative liability for the three month period ended March 31, 2013 are as follows:

Derivative Liability
Balance at January 1, 2013
$
128
Gain on derivative liability(64)
Balance at March 31, 2013
$
64