XML 53 R31.htm IDEA: XBRL DOCUMENT v3.8.0.1
Convertible Debt (Tables)
 9 Months Ended
Sep. 30, 2017
Debt Disclosure [Abstract]  
Summary of Liability and Equity Components of Notes

A summary of the liability and equity components of the 2013 Notes is as follows at September 30, 2017 and December 31, 2016 (in thousands):

 

 

 

September 30,

 

 

December 31,

 

 

 

2017

 

 

2016

 

Principal amount of senior convertible notes outstanding

 

$

30,303

 

 

$

79,903

 

Unamortized discount of liability component

 

 

(4,890

)

 

 

(15,477

)

Unamortized debt issuance costs

 

 

(46

)

 

 

(147

)

Long term convertible debt

 

$

25,367

 

 

$

64,279

 

Carrying value of equity component, net of issuance costs

 

$

31,178

 

 

$

31,178

 

Remaining amortization period of discount on the liability

   component

 

3.3 years

 

 

4.0 years