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Accrued Expenses (Tables)
12 Months Ended
Dec. 31, 2012
Accrued Expenses [Abstract]  
Schedule of accrued expenses
 
As of December 31,
 
 
2012
 
2011
 
         
Salaries, payroll taxes, vacation and benefits
  $ 621     $ 560  
Accrued consulting fees and other
    183       41  
Total accrued expenses
  $ 804     $ 601