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Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2012
Fair Value Measurements  
Summary of information on assets measured at fair value on a recurring basis

The following table provides information on those assets that are measured at fair value on a recurring basis as of December 31, 2012:

 
   
  Fair Value
Measurements
at the end of the
Reporting
Period Using
 
Assets:
  Carrying
value
  Significant Other
Observable
Inputs
(Level 2)
 

Foreign currency contract

  $ 209,370   $ 209,370