Commitments and Contingencies (Tables)
6 Months Ended
Jun. 30, 2013
Commitments And Contingencies Disclosure [Abstract]  
Future Minimum Rental Payments

As of June 30, 2013, future minimum rental payments are as follows:

 

Years Ending December 31,

   (In thousands)  

2013 (remaining)

   $ 55   

2014

     116   

2015

     136   

2016

     148   

2017

     74   
  

 

 

 

Total

   $ 529