XML 41 R24.htm IDEA: XBRL DOCUMENT v2.4.0.6
Available for Sale Securities and Certificate of Deposit (Tables)
9 Months Ended
Sep. 30, 2012
Available-for-sale securities and certificate of deposit [Abstract]  
Summary of available-for-sale securities classified as current assets
                                                 
    September 30, 2012     December 31, 2011  
    Cost
Basis
    Gross
Unrealized
Gain
    Fair
Value
    Cost
Basis
    Gross
Unrealized
Gain
    Fair
Value
 

Common stock investment

  $ —       $ —       $ —       $ 117     $ 48     $ 165