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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2012
Fair Value [Abstract]  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
   As of December 31, 2011 
  (Amounts in thousands)Total Level 1 Level 2 Level 3 
  Short-term investments$ 5,000 $ 5,000 $ - $ -