XML 33 R18.htm IDEA: XBRL DOCUMENT v2.4.0.8
Convertible Preferred Stock Warrants (Tables)
 9 Months Ended
Sep. 30, 2014
Equity [Abstract]  
Assumptions Used to Value Convertible Preferred Stock Warrants

The assumptions used to value the convertible preferred stock warrants were as follows:

 

 

December 31,

 

 

2013

 

Expected term (in years)

 

1.1

 

Expected volatility

 

75.00

%

Risk-free interest rate

 

13.00

%

Dividend yield

 

0

%