XML 15 R48.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stockholders' Deficit (Details)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Stock options valuation assumptions    
Dividend yield 0.00% 0.00%
Minimum [Member]
   
Stock options valuation assumptions    
Risk-free interest rate 0.41% 0.41%
Expected volatility of common stock 64.04% 69.83%
Expected life of options 3 years 3 years
Maximum [Member]
   
Stock options valuation assumptions    
Risk-free interest rate 0.63% 0.67%
Expected volatility of common stock 68.26% 71.63%
Expected life of options 4 years 1 month 6 days 4 years 1 month 6 days