XML 21 R25.htm IDEA: XBRL DOCUMENT v2.4.0.6
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
12 Months Ended
Dec. 31, 2012
Summary Of Significant Accounting Policies Tables  
Accounting for Share-Based Payments

The fair value of each share-based payment is estimated on the measurement date using the Black-Scholes model with the following assumptions:

 

    2012     2011  
             
Risk-free interest rate     2.42 %     2.69% - 3.90 %
Expected volatility     77.70 %     72.06% - 117 %
Dividend yield   none     none  
Expected term   5 years     5 years