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Commitments (Tables)
3 Months Ended
Mar. 31, 2013
Commitments/Legal Proceedings [Abstract]  
Future minimum lease payments

We currently lease approximately 6,000 square feet of office space pursuant to a non-cancelable operating lease in Austin, TX that expires in 2014. Future minimum lease payments by year are as follows (in thousands):

 

                         
    2013     2014     Total  

Future minimum lease payments

  $ 115     $ 81     $ 196