Annual report pursuant to Section 13 and 15(d)

Equity-Based Compensation (Details)

v2.4.0.8
Equity-Based Compensation (Details)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Schedule of stock options      
Risk-free interest rate, Minimum 0.15% 0.09% 1.30%
Risk-free interest rate, Maximum 2.45% 2.61% 2.70%
Expected volatility   69.00%  
Expected volatility, Minimum 31.00%   69.00%
Expected volatility, Maximum 83.00%   74.00%
Expected dividend yield 0.00% 0.00% 0.00%
Minimum [Member]
     
Schedule of stock options      
Expected term 1 year 1 year 7 months 6 days
Maximum [Member]
     
Schedule of stock options      
Expected term 7 years 7 years 7 years