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Fair Value of Contingent Liability (Tables)
9 Months Ended
Sep. 30, 2012
Fair Value of Contingent Liability [Abstract]  
Fair Value Measurements
                                         
          Fair Value Measurements Using        

Description

  Period Ended
September 30, 2012
    Quoted Prices
in Acitve
Markets for
dentical Asset
(Level 1)
    Significant
Other
Observable
Inputs
(Level 2)
    Significant
Unobservable
Inputs

(Level 3)
    Total
Gains
 

Contingent liability

  $ —       $ —       $ —       $ —       $ 1,210