v2.4.0.6
Options Granted Weighted Average Assumptions (Details)
6 Months Ended
Jun. 30, 2012
Options Granted Weighted Average Assumptions [Line Items]  
Expected volatility 75.00%
Expected dividends 0.00%
Maximum [Member]
 
Options Granted Weighted Average Assumptions [Line Items]  
Risk free interest rate 1.11%
Expected term (years) 6 years
Minimum [Member]
 
Options Granted Weighted Average Assumptions [Line Items]  
Risk free interest rate 0.96%
Expected term (years) 5 years 4 months 24 days